cc: Set the max frames pending from the thread proxy.

cc/layer_tree_host_unittest.cc

Index: cc/layer_tree_host_unittest.cc
diff --git a/cc/layer_tree_host_unittest.cc b/cc/layer_tree_host_unittest.cc
index 703217dd07df7842c470df7a83aa0e44cb7fe8d2..f9c4f069c31f94a95a1c778345015c5e159c1bda 100644
--- a/cc/layer_tree_host_unittest.cc
+++ b/cc/layer_tree_host_unittest.cc
@@ -7,12 +7,14 @@
 #include "base/synchronization/lock.h"
 #include "cc/content_layer.h"
 #include "cc/content_layer_client.h"
+#include "cc/frame_rate_controller.h"
 #include "cc/layer_impl.h"
 #include "cc/layer_tree_host_impl.h"
 #include "cc/layer_tree_impl.h"
 #include "cc/output_surface.h"
 #include "cc/picture_layer.h"
 #include "cc/prioritized_resource.h"
+#include "cc/resource_update_queue.h"
 #include "cc/single_thread_proxy.h"
 #include "cc/test/fake_content_layer.h"
 #include "cc/test/fake_content_layer_client.h"
@@ -22,8 +24,8 @@
 #include "cc/test/fake_scrollbar_layer.h"
 #include "cc/test/geometry_test_utils.h"
 #include "cc/test/layer_tree_test_common.h"
-#include "cc/resource_update_queue.h"
 #include "cc/test/occlusion_tracker_test_common.h"
+#include "cc/thread_proxy.h"
 #include "cc/timing_function.h"
 #include "skia/ext/refptr.h"
 #include "testing/gmock/include/gmock/gmock.h"
@@ -2088,5 +2090,56 @@ private:
 
 MULTI_THREAD_TEST_F(LayerTreeHostTestCapturePicture);
 
+class LayerTreeHostTestMaxPendingFrames : public LayerTreeHostTest {
+public:
+    LayerTreeHostTestMaxPendingFrames()
+        : LayerTreeHostTest()
+    {
+    }
+
+    virtual scoped_ptr<OutputSurface> createOutputSurface() OVERRIDE
+    {
+        if (m_delegatingRenderer)
+            return FakeOutputSurface::CreateDelegating3d().PassAs<OutputSurface>();
+        return FakeOutputSurface::Create3d().PassAs<OutputSurface>();
+    }
+
+    virtual void beginTest() OVERRIDE
+    {
+        postSetNeedsCommitToMainThread();
+    }
+
+    virtual void drawLayersOnThread(LayerTreeHostImpl* hostImpl) OVERRIDE
+    {
+        DCHECK(hostImpl->proxy()->hasImplThread());
+
+        const ThreadProxy* proxy = static_cast<ThreadProxy*>(hostImpl->proxy());
+        if (m_delegatingRenderer)
+            EXPECT_EQ(1, proxy->maxFramesPendingForTesting());
+        else
+            EXPECT_EQ(FrameRateController::kDefaultMaxFramesPending, proxy->maxFramesPendingForTesting());
+        endTest();
+    }
+
+    virtual void afterTest() OVERRIDE
+    {
+    }
+
+protected:
+    bool m_delegatingRenderer;
+};
+
+TEST_F(LayerTreeHostTestMaxPendingFrames, DelegatingRenderer)
+{
+    m_delegatingRenderer = true;
+    runTest(true);
+}
+
+TEST_F(LayerTreeHostTestMaxPendingFrames, GLRenderer)
+{
+    m_delegatingRenderer = false;
+    runTest(true);
+}
+
 }  // namespace
 }  // namespace cc