cc: Convert non-const reference arguments to pointers.

cc/output/delegating_renderer_unittest.cc

 // Copyright 2013 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/output/delegating_renderer.h"
 
 #include "cc/test/fake_output_surface.h"
 #include "cc/test/layer_tree_test.h"
 #include "cc/test/render_pass_test_common.h"
 #include "cc/test/render_pass_test_utils.h"
@@ skipping 30 matching lines @@
     PostSetNeedsCommitToMainThread();
   }
 
   virtual void AfterTest() OVERRIDE {}
 
   virtual bool PrepareToDrawOnThread(
       LayerTreeHostImpl*, LayerTreeHostImpl::FrameData* frame, bool result)
       OVERRIDE {
     EXPECT_EQ(0u, output_surface_->num_sent_frames());
 
-    CompositorFrame& last_frame = output_surface_->last_sent_frame();
+    const CompositorFrame& last_frame = output_surface_->last_sent_frame();
     EXPECT_FALSE(last_frame.delegated_frame_data);
     EXPECT_FALSE(last_frame.gl_frame_data);
     EXPECT_EQ(0.f, last_frame.metadata.min_page_scale_factor);
     EXPECT_EQ(0.f, last_frame.metadata.max_page_scale_factor);
     return true;
   }
 
   virtual void DrawLayersOnThread(LayerTreeHostImpl* host_impl) OVERRIDE {
     EXPECT_EQ(1u, output_surface_->num_sent_frames());
 
-    CompositorFrame& last_frame = output_surface_->last_sent_frame();
+    const CompositorFrame& last_frame = output_surface_->last_sent_frame();
     DelegatedFrameData* last_frame_data = last_frame.delegated_frame_data.get();
     ASSERT_TRUE(last_frame.delegated_frame_data);
     EXPECT_FALSE(last_frame.gl_frame_data);
     EXPECT_EQ(
         gfx::Rect(host_impl->device_viewport_size()).ToString(),
         last_frame_data->render_pass_list.back()->output_rect.ToString());
     EXPECT_EQ(0.5f, last_frame.metadata.min_page_scale_factor);
     EXPECT_EQ(4.f, last_frame.metadata.max_page_scale_factor);
 
     EXPECT_EQ(
@@ skipping 36 matching lines @@
         gfx::Rect(3, 3, 10, 10),
         gfx::Transform());
     pass->AppendOneOfEveryQuadType(
         host_impl->resource_provider(), child_pass->id);
     return true;
   }
 
   virtual void DrawLayersOnThread(LayerTreeHostImpl* host_impl) OVERRIDE {
     EXPECT_EQ(1u, output_surface_->num_sent_frames());
 
-    CompositorFrame& last_frame = output_surface_->last_sent_frame();
+    const CompositorFrame& last_frame = output_surface_->last_sent_frame();
     ASSERT_TRUE(last_frame.delegated_frame_data);
 
     EXPECT_EQ(2u, last_frame.delegated_frame_data->render_pass_list.size());
     // Each render pass has 7 resources in it. And the root render pass has a
     // mask resource used when drawing the child render pass. The number 7 may
     // change if AppendOneOfEveryQuadType is updated, and the value here should
     // be updated accordingly.
     EXPECT_EQ(
         15u, last_frame.delegated_frame_data->resource_list.size());
 
     EndTest();
   }
 };
 
 SINGLE_AND_MULTI_THREAD_TEST_F(DelegatingRendererTestResources)
 
 }  // namespace cc