Allow changing top controls height

cc/trees/layer_tree_host_impl_unittest.cc

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/trees/layer_tree_host_impl.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/bind.h"
@@ skipping 142 matching lines @@
     scrollbar_fade_start_ = start_fade;
     requested_scrollbar_animation_delay_ = delay;
   }
   void DidActivateSyncTree() override {}
   void DidManageTiles() override {}
 
   void set_reduce_memory_result(bool reduce_memory_result) {
     reduce_memory_result_ = reduce_memory_result;
   }
 
-  bool CreateHostImpl(const LayerTreeSettings& settings,
-                      scoped_ptr<OutputSurface> output_surface) {
+  virtual bool CreateHostImpl(const LayerTreeSettings& settings,
+                              scoped_ptr<OutputSurface> output_surface) {
     host_impl_ = LayerTreeHostImpl::Create(settings,
                                            this,
                                            &proxy_,
                                            &stats_instrumentation_,
                                            shared_bitmap_manager_.get(),
                                            gpu_memory_buffer_manager_.get(),
                                            0);
     bool init = host_impl_->InitializeRenderer(output_surface.Pass());
     host_impl_->SetViewportSize(gfx::Size(10, 10));
     return init;
@@ skipping 2088 matching lines @@
   EXPECT_FALSE(did_request_commit_);
 }
 
 // TODO(bokan): Convert these tests to create inner and outer viewports.
 class LayerTreeHostImplTopControlsTest : public LayerTreeHostImplTest {
  public:
   LayerTreeHostImplTopControlsTest()
       // Make the clip size the same as the layer (content) size so the layer is
       // non-scrollable.
       : layer_size_(10, 10),
-        clip_size_(layer_size_) {
+        clip_size_(layer_size_),
+        top_controls_height_(50) {
     settings_.calculate_top_controls_position = true;
-    settings_.top_controls_height = 50;
     settings_.use_pinch_virtual_viewport = true;
 
-    viewport_size_ =
-        gfx::Size(clip_size_.width(),
-                  clip_size_.height() + settings_.top_controls_height);
+    viewport_size_ = gfx::Size(clip_size_.width(),
+                               clip_size_.height() + top_controls_height_);
+  }
+
+  bool CreateHostImpl(const LayerTreeSettings& settings,
+                      scoped_ptr<OutputSurface> output_surface) override {
+    bool init =
+        LayerTreeHostImplTest::CreateHostImpl(settings, output_surface.Pass());
+    if (init && settings.calculate_top_controls_position) {
+      host_impl_->active_tree()->set_top_controls_height(top_controls_height_);
+      host_impl_->active_tree()->set_top_controls_delta(top_controls_height_);
+      host_impl_->top_controls_manager()->SetTopControlsHeight(
+          top_controls_height_);
+      host_impl_->DidChangeTopControlsPosition();
+    }
+    return init;
   }
 
   void SetupTopControlsAndScrollLayer() {
     scoped_ptr<LayerImpl> root =
         LayerImpl::Create(host_impl_->active_tree(), 1);
     scoped_ptr<LayerImpl> root_clip =
         LayerImpl::Create(host_impl_->active_tree(), 2);
     root_clip->SetBounds(clip_size_);
     root->SetScrollClipLayer(root_clip->id());
     root->SetBounds(layer_size_);
     root->SetContentBounds(layer_size_);
     root->SetPosition(gfx::PointF());
     root->SetDrawsContent(false);
     root->SetIsContainerForFixedPositionLayers(true);
     int inner_viewport_scroll_layer_id = root->id();
     int page_scale_layer_id = root_clip->id();
     root_clip->AddChild(root.Pass());
     host_impl_->active_tree()->SetRootLayer(root_clip.Pass());
     host_impl_->active_tree()->SetViewportLayersFromIds(
         Layer::INVALID_ID, page_scale_layer_id, inner_viewport_scroll_layer_id,
         Layer::INVALID_ID);
     // Set a viewport size that is large enough to contain both the top controls
     // and some content.
     host_impl_->SetViewportSize(viewport_size_);
-    host_impl_->SetTopControlsLayoutHeight(
-        settings_.top_controls_height);
+    host_impl_->sync_tree()->set_top_controls_shrink_blink_size(true);
+
+    host_impl_->DidChangeTopControlsPosition();
 
     host_impl_->CreatePendingTree();
     root =
         LayerImpl::Create(host_impl_->sync_tree(), 1);
     root_clip =
         LayerImpl::Create(host_impl_->sync_tree(), 2);
     root_clip->SetBounds(clip_size_);
     root->SetScrollClipLayer(root_clip->id());
     root->SetBounds(layer_size_);
     root->SetContentBounds(layer_size_);
     root->SetPosition(gfx::PointF());
     root->SetDrawsContent(false);
     root->SetIsContainerForFixedPositionLayers(true);
     inner_viewport_scroll_layer_id = root->id();
     page_scale_layer_id = root_clip->id();
     root_clip->AddChild(root.Pass());
     host_impl_->sync_tree()->SetRootLayer(root_clip.Pass());
     host_impl_->sync_tree()->SetViewportLayersFromIds(
         Layer::INVALID_ID, page_scale_layer_id, inner_viewport_scroll_layer_id,
         Layer::INVALID_ID);
     // Set a viewport size that is large enough to contain both the top controls
     // and some content.
     host_impl_->SetViewportSize(viewport_size_);
-    host_impl_->sync_tree()->set_top_controls_layout_height(
-        settings_.top_controls_height);
+    host_impl_->sync_tree()->set_top_controls_shrink_blink_size(true);
+    host_impl_->DidChangeTopControlsPosition();
   }
 
   void SetupTopControlsAndScrollLayerWithVirtualViewport(
       const gfx::Size& inner_viewport_size,
       const gfx::Size& outer_viewport_size,
       const gfx::Size& scroll_layer_size) {
     CreateHostImpl(settings_, CreateOutputSurface());
-    host_impl_->SetTopControlsLayoutHeight(
-        settings_.top_controls_height);
+    host_impl_->sync_tree()->set_top_controls_shrink_blink_size(true);
+    host_impl_->DidChangeTopControlsPosition();
 
     scoped_ptr<LayerImpl> root =
         LayerImpl::Create(host_impl_->active_tree(), 1);
     scoped_ptr<LayerImpl> root_clip =
         LayerImpl::Create(host_impl_->active_tree(), 2);
     scoped_ptr<LayerImpl> page_scale =
         LayerImpl::Create(host_impl_->active_tree(), 3);
 
     scoped_ptr<LayerImpl> outer_scroll =
         LayerImpl::Create(host_impl_->active_tree(), 4);
@@ skipping 32 matching lines @@
 
     host_impl_->SetViewportSize(inner_viewport_size);
     LayerImpl* root_clip_ptr = host_impl_->active_tree()->root_layer();
     EXPECT_EQ(inner_viewport_size, root_clip_ptr->bounds());
   }
 
  protected:
   gfx::Size layer_size_;
   gfx::Size clip_size_;
   gfx::Size viewport_size_;
+  float top_controls_height_;
 
   LayerTreeSettings settings_;
 };  // class LayerTreeHostImplTopControlsTest
 
 TEST_F(LayerTreeHostImplTopControlsTest, ScrollTopControlsByFractionalAmount) {
   SetupTopControlsAndScrollLayerWithVirtualViewport(
       gfx::Size(10, 10), gfx::Size(10, 10), gfx::Size(10, 10));
   DrawFrame();
 
   EXPECT_EQ(InputHandler::ScrollStarted,
@@ skipping 91 matching lines @@
 }
 
 // Test that the fixed position container delta is appropriately adjusted
 // by the top controls showing/hiding and page scale doesn't affect it.
 TEST_F(LayerTreeHostImplTopControlsTest, FixedContainerDelta) {
   SetupTopControlsAndScrollLayerWithVirtualViewport(
       gfx::Size(100, 100), gfx::Size(100, 100), gfx::Size(100, 100));
   DrawFrame();
 
   float page_scale = 1.5f;
-  float top_controls_height = settings_.top_controls_height;
   LayerImpl* outer_viewport_scroll_layer =
       host_impl_->active_tree()->OuterViewportScrollLayer();
 
   // Zoom in, since the fixed container is the outer viewport, the delta should
   // not be scaled.
   host_impl_->active_tree()->SetPageScaleFactorAndLimits(page_scale, 1.f, 2.f);
 
   EXPECT_EQ(InputHandler::ScrollStarted,
             host_impl_->ScrollBegin(gfx::Point(), InputHandler::Gesture));
 
   // Scroll down, the top controls hiding should expand the viewport size so
   // the delta should be equal to the scroll distance.
   gfx::Vector2dF top_controls_scroll_delta(0.f, 20.f);
   host_impl_->top_controls_manager()->ScrollBegin();
   host_impl_->top_controls_manager()->ScrollBy(top_controls_scroll_delta);
-  EXPECT_EQ(top_controls_height - top_controls_scroll_delta.y(),
+  EXPECT_EQ(top_controls_height_ - top_controls_scroll_delta.y(),
             host_impl_->top_controls_manager()->ContentTopOffset());
   EXPECT_VECTOR_EQ(top_controls_scroll_delta,
                    outer_viewport_scroll_layer->FixedContainerSizeDelta());
   host_impl_->ScrollEnd();
 
   // Scroll past the maximum extent. The delta shouldn't be greater than the
   // top controls height.
   host_impl_->top_controls_manager()->ScrollBegin();
   host_impl_->top_controls_manager()->ScrollBy(top_controls_scroll_delta);
   host_impl_->top_controls_manager()->ScrollBy(top_controls_scroll_delta);
   host_impl_->top_controls_manager()->ScrollBy(top_controls_scroll_delta);
   EXPECT_EQ(0.f, host_impl_->top_controls_manager()->ContentTopOffset());
-  EXPECT_VECTOR_EQ(gfx::Vector2dF(0, top_controls_height),
+  EXPECT_VECTOR_EQ(gfx::Vector2dF(0, top_controls_height_),
                    outer_viewport_scroll_layer->FixedContainerSizeDelta());
   host_impl_->ScrollEnd();
 
   // Scroll in the direction to make the top controls show.
   host_impl_->top_controls_manager()->ScrollBegin();
   host_impl_->top_controls_manager()->ScrollBy(-top_controls_scroll_delta);
   EXPECT_EQ(top_controls_scroll_delta.y(),
             host_impl_->top_controls_manager()->ContentTopOffset());
   EXPECT_VECTOR_EQ(
-      gfx::Vector2dF(0, top_controls_height - top_controls_scroll_delta.y()),
+      gfx::Vector2dF(0, top_controls_height_ - top_controls_scroll_delta.y()),
       outer_viewport_scroll_layer->FixedContainerSizeDelta());
   host_impl_->top_controls_manager()->ScrollEnd();
 }
 
 // Ensure setting the top controls position explicitly using the setters on the
 // TreeImpl correctly affects the top controls manager and viewport bounds.
 TEST_F(LayerTreeHostImplTopControlsTest, PositionTopControlsExplicitly) {
   CreateHostImpl(settings_, CreateOutputSurface());
   SetupTopControlsAndScrollLayer();
   DrawFrame();
@@ skipping 50 matching lines @@
 
 // Test that changing the top controls layout height is correctly applied to
 // the inner viewport container bounds. That is, the top controls layout
 // height is the amount that the inner viewport container was shrunk outside
 // the compositor to accommodate the top controls.
 TEST_F(LayerTreeHostImplTopControlsTest, TopControlsLayoutHeightChanged) {
   CreateHostImpl(settings_, CreateOutputSurface());
   SetupTopControlsAndScrollLayer();
   DrawFrame();
 
-  host_impl_->sync_tree()->set_top_controls_content_offset(15.f);
-  host_impl_->sync_tree()->set_top_controls_layout_height(15.f);
+  host_impl_->sync_tree()->set_top_controls_content_offset(50.f);
+  host_impl_->sync_tree()->set_top_controls_shrink_blink_size(true);
 
-  host_impl_->active_tree()->set_top_controls_content_offset(20.f);
-  host_impl_->active_tree()->set_top_controls_delta(-20.f);
-  host_impl_->active_tree()->set_sent_top_controls_delta(-5.f);
+  host_impl_->active_tree()->set_top_controls_content_offset(50.f);
+  host_impl_->active_tree()->set_top_controls_delta(-50.f);
 
   host_impl_->DidChangeTopControlsPosition();
   LayerImpl* root_clip_ptr = host_impl_->active_tree()->root_layer();
   EXPECT_EQ(viewport_size_, root_clip_ptr->bounds());
   EXPECT_EQ(0.f, host_impl_->top_controls_manager()->ContentTopOffset());
 
   host_impl_->sync_tree()->root_layer()->SetBounds(
       gfx::Size(root_clip_ptr->bounds().width(),
-                root_clip_ptr->bounds().height() - 15.f));
+                root_clip_ptr->bounds().height() - 50.f));
 
   host_impl_->ActivateSyncTree();
 
   root_clip_ptr = host_impl_->active_tree()->root_layer();
   EXPECT_EQ(0.f, host_impl_->top_controls_manager()->ContentTopOffset());
 
   // The total bounds should remain unchanged since the bounds delta should
   // account for the difference between the layout height and the current
   // top controls offset.
   EXPECT_EQ(viewport_size_, root_clip_ptr->bounds());
-  EXPECT_VECTOR_EQ(gfx::Vector2dF(0.f, 15.f), root_clip_ptr->bounds_delta());
+  EXPECT_VECTOR_EQ(gfx::Vector2dF(0.f, 50.f), root_clip_ptr->bounds_delta());
 
   host_impl_->active_tree()->set_top_controls_delta(0.f);
   host_impl_->DidChangeTopControlsPosition();
 
-  EXPECT_EQ(15.f, host_impl_->top_controls_manager()->ContentTopOffset());
+  EXPECT_EQ(50.f, host_impl_->top_controls_manager()->ContentTopOffset());
   EXPECT_VECTOR_EQ(gfx::Vector2dF(0.f, 0.f), root_clip_ptr->bounds_delta());
-  EXPECT_EQ(gfx::Size(viewport_size_.width(), viewport_size_.height()-15.f),
+  EXPECT_EQ(gfx::Size(viewport_size_.width(), viewport_size_.height() - 50.f),
             root_clip_ptr->bounds());
 }
 
 // Test that showing/hiding the top controls when the viewport is fully scrolled
 // doesn't incorrectly change the viewport offset due to clamping from changing
 // viewport bounds.
 TEST_F(LayerTreeHostImplTopControlsTest, TopControlsViewportOffsetClamping) {
   SetupTopControlsAndScrollLayerWithVirtualViewport(
       gfx::Size(100, 100), gfx::Size(200, 200), gfx::Size(200, 400));
   DrawFrame();
 
-  EXPECT_EQ(settings_.top_controls_height,
+  EXPECT_EQ(top_controls_height_,
             host_impl_->active_tree()->total_top_controls_content_offset());
 
   LayerImpl* outer_scroll = host_impl_->OuterViewportScrollLayer();
   LayerImpl* inner_scroll = host_impl_->InnerViewportScrollLayer();
 
   // Scroll the viewports to max scroll offset.
   outer_scroll->SetScrollDelta(gfx::Vector2dF(0, 200.f));
   inner_scroll->SetScrollDelta(gfx::Vector2dF(100, 100.f));
 
   gfx::ScrollOffset viewport_offset =
       host_impl_->active_tree()->TotalScrollOffset();
   EXPECT_EQ(host_impl_->active_tree()->TotalMaxScrollOffset(), viewport_offset);
 
   // Hide the top controls by 25px.
   gfx::Vector2dF scroll_delta(0.f, 25.f);
   EXPECT_EQ(InputHandler::ScrollStarted,
             host_impl_->ScrollBegin(gfx::Point(), InputHandler::Gesture));
   host_impl_->ScrollBy(gfx::Point(), scroll_delta);
 
   // scrolling down at the max extents no longer hides the top controls
   EXPECT_EQ(0.f,
-            settings_.top_controls_height -
+            top_controls_height_ -
                 host_impl_->active_tree()->total_top_controls_content_offset());
 
   // forcefully hide the top controls by 25px
   host_impl_->top_controls_manager()->ScrollBy(scroll_delta);
   host_impl_->ScrollEnd();
 
   EXPECT_EQ(scroll_delta.y(),
-            settings_.top_controls_height -
+            top_controls_height_ -
                 host_impl_->active_tree()->total_top_controls_content_offset());
 
   inner_scroll->ClampScrollToMaxScrollOffset();
   outer_scroll->ClampScrollToMaxScrollOffset();
 
   // We should still be fully scrolled.
   EXPECT_EQ(host_impl_->active_tree()->TotalMaxScrollOffset(),
             host_impl_->active_tree()->TotalScrollOffset());
 
   viewport_offset = host_impl_->active_tree()->TotalScrollOffset();
@@ skipping 16 matching lines @@
             host_impl_->active_tree()->TotalScrollOffset());
 }
 
 // Test that the top controls coming in and out maintains the same aspect ratio
 // between the inner and outer viewports.
 TEST_F(LayerTreeHostImplTopControlsTest, TopControlsAspectRatio) {
   SetupTopControlsAndScrollLayerWithVirtualViewport(
       gfx::Size(100, 100), gfx::Size(200, 200), gfx::Size(200, 400));
   DrawFrame();
 
-  EXPECT_EQ(settings_.top_controls_height,
+  EXPECT_EQ(top_controls_height_,
             host_impl_->active_tree()->total_top_controls_content_offset());
 
   gfx::Vector2dF scroll_delta(0.f, 25.f);
   EXPECT_EQ(InputHandler::ScrollStarted,
             host_impl_->ScrollBegin(gfx::Point(), InputHandler::Gesture));
   host_impl_->ScrollBy(gfx::Point(), scroll_delta);
   host_impl_->ScrollEnd();
 
   EXPECT_EQ(scroll_delta.y(),
-            settings_.top_controls_height -
+            top_controls_height_ -
                 host_impl_->active_tree()->total_top_controls_content_offset());
 
   // Top controls were hidden by 25px so the inner viewport should have expanded
   // by that much.
   LayerImpl* outer_container =
             host_impl_->active_tree()->OuterViewportContainerLayer();
   LayerImpl* inner_container =
             host_impl_->active_tree()->InnerViewportContainerLayer();
   EXPECT_EQ(gfx::Size(100, 100+25), inner_container->BoundsForScrolling());
 
   // Outer viewport should match inner's aspect ratio. The bounds are ceiled.
   float aspect_ratio = inner_container->BoundsForScrolling().width() /
                        inner_container->BoundsForScrolling().height();
   gfx::Size expected = gfx::ToCeiledSize(gfx::SizeF(200, 200 / aspect_ratio));
   EXPECT_EQ(expected, outer_container->BoundsForScrolling());
   EXPECT_EQ(expected,
             host_impl_->InnerViewportScrollLayer()->BoundsForScrolling());
 }
 
 // Test that scrolling the outer viewport affects the top controls.
 TEST_F(LayerTreeHostImplTopControlsTest, TopControlsScrollOuterViewport) {
   SetupTopControlsAndScrollLayerWithVirtualViewport(
       gfx::Size(100, 100), gfx::Size(200, 200), gfx::Size(200, 400));
   DrawFrame();
 
-  EXPECT_EQ(settings_.top_controls_height,
+  EXPECT_EQ(top_controls_height_,
             host_impl_->active_tree()->total_top_controls_content_offset());
 
   // Send a gesture scroll that will scroll the outer viewport, make sure the
   // top controls get scrolled.
   gfx::Vector2dF scroll_delta(0.f, 15.f);
   EXPECT_EQ(InputHandler::ScrollStarted,
             host_impl_->ScrollBegin(gfx::Point(), InputHandler::Gesture));
   host_impl_->ScrollBy(gfx::Point(), scroll_delta);
   EXPECT_EQ(host_impl_->OuterViewportScrollLayer(),
             host_impl_->CurrentlyScrollingLayer());
   host_impl_->ScrollEnd();
 
   EXPECT_EQ(scroll_delta.y(),
-            settings_.top_controls_height -
+            top_controls_height_ -
                 host_impl_->active_tree()->total_top_controls_content_offset());
 
   scroll_delta = gfx::Vector2dF(0.f, 50.f);
   EXPECT_EQ(InputHandler::ScrollStarted,
             host_impl_->ScrollBegin(gfx::Point(), InputHandler::Gesture));
   host_impl_->ScrollBy(gfx::Point(), scroll_delta);
 
   EXPECT_EQ(0, host_impl_->active_tree()->total_top_controls_content_offset());
   EXPECT_EQ(host_impl_->OuterViewportScrollLayer(),
             host_impl_->CurrentlyScrollingLayer());
 
   host_impl_->ScrollEnd();
 
   // Position the viewports such that the inner viewport will be scrolled.
   gfx::Vector2dF inner_viewport_offset(0.f, 25.f);
   host_impl_->OuterViewportScrollLayer()->SetScrollDelta(gfx::Vector2dF());
   host_impl_->InnerViewportScrollLayer()->SetScrollDelta(inner_viewport_offset);
 
   scroll_delta = gfx::Vector2dF(0.f, -65.f);
   EXPECT_EQ(InputHandler::ScrollStarted,
             host_impl_->ScrollBegin(gfx::Point(), InputHandler::Gesture));
   host_impl_->ScrollBy(gfx::Point(), scroll_delta);
 
-  EXPECT_EQ(settings_.top_controls_height,
+  EXPECT_EQ(top_controls_height_,
             host_impl_->active_tree()->total_top_controls_content_offset());
-  EXPECT_EQ(inner_viewport_offset.y() +
-                (scroll_delta.y() + settings_.top_controls_height),
-            host_impl_->InnerViewportScrollLayer()->ScrollDelta().y());
+  EXPECT_EQ(
+      inner_viewport_offset.y() + (scroll_delta.y() + top_controls_height_),
+      host_impl_->InnerViewportScrollLayer()->ScrollDelta().y());
 
   host_impl_->ScrollEnd();
 }
 
 TEST_F(LayerTreeHostImplTopControlsTest,
        ScrollNonScrollableRootWithTopControls) {
   CreateHostImpl(settings_, CreateOutputSurface());
   SetupTopControlsAndScrollLayer();
   DrawFrame();
 
@@ skipping 4372 matching lines @@
     EXPECT_EQ(2, set_needs_redraw_count);
     EXPECT_EQ(1, forward_to_main_count);
   }
 }
 
 class LayerTreeHostImplWithTopControlsTest : public LayerTreeHostImplTest {
  public:
   void SetUp() override {
     LayerTreeSettings settings = DefaultSettings();
     settings.calculate_top_controls_position = true;
-    settings.top_controls_height = top_controls_height_;
     CreateHostImpl(settings, CreateOutputSurface());
+    host_impl_->active_tree()->set_top_controls_height(top_controls_height_);
+    host_impl_->active_tree()->set_top_controls_delta(top_controls_height_);
+    host_impl_->top_controls_manager()->SetTopControlsHeight(
+        top_controls_height_);
   }
 
  protected:
   static const int top_controls_height_;
 };
 
 const int LayerTreeHostImplWithTopControlsTest::top_controls_height_ = 50;
 
 TEST_F(LayerTreeHostImplWithTopControlsTest, NoIdleAnimations) {
   SetupScrollAndContentsLayers(gfx::Size(100, 100))
       ->SetScrollOffset(gfx::ScrollOffset(0, 10));
   host_impl_->Animate(base::TimeTicks());
   EXPECT_FALSE(did_request_redraw_);
 }
 
+TEST_F(LayerTreeHostImplWithTopControlsTest, TopControlsHeightIsCommitted) {
+  SetupScrollAndContentsLayers(gfx::Size(100, 100));
+  EXPECT_FALSE(did_request_redraw_);
+  host_impl_->CreatePendingTree();
+  host_impl_->sync_tree()->set_top_controls_height(100);
+  host_impl_->ActivateSyncTree();
+  EXPECT_EQ(100, host_impl_->top_controls_manager()->top_controls_height());
+}
+
+TEST_F(LayerTreeHostImplWithTopControlsTest,
+       TopControlsStayFullyVisibleOnHeightChange) {
+  SetupScrollAndContentsLayers(gfx::Size(100, 100));
+  EXPECT_EQ(0.f, host_impl_->ControlsTopOffset());
+
+  host_impl_->CreatePendingTree();
+  host_impl_->sync_tree()->set_top_controls_height(0);
+  host_impl_->ActivateSyncTree();
+  EXPECT_EQ(0.f, host_impl_->ControlsTopOffset());
+
+  host_impl_->CreatePendingTree();
+  host_impl_->sync_tree()->set_top_controls_height(50);
+  host_impl_->ActivateSyncTree();
+  EXPECT_EQ(0.f, host_impl_->ControlsTopOffset());
+}
+
 TEST_F(LayerTreeHostImplWithTopControlsTest, TopControlsAnimationScheduling) {
   SetupScrollAndContentsLayers(gfx::Size(100, 100))
       ->SetScrollOffset(gfx::ScrollOffset(0, 10));
   host_impl_->DidChangeTopControlsPosition();
   EXPECT_TRUE(did_request_animate_);
   EXPECT_TRUE(did_request_redraw_);
 }
 
 TEST_F(LayerTreeHostImplWithTopControlsTest, ScrollHandledByTopControls) {
   LayerImpl* scroll_layer = SetupScrollAndContentsLayers(gfx::Size(100, 200));
@@ skipping 654 matching lines @@
   // surface.
   EXPECT_EQ(0, num_lost_surfaces_);
   host_impl_->DidLoseOutputSurface();
   EXPECT_EQ(1, num_lost_surfaces_);
   host_impl_->DidLoseOutputSurface();
   EXPECT_LE(1, num_lost_surfaces_);
 }
 
 }  // namespace
 }  // namespace cc