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 dd7bb1d973b80058eaef6a6a0dcb2e6d6e012e27..e3e29fc033bfb6608740c5924d6e7622f6f85fa9 100644
--- a/cc/layer_tree_host_unittest.cc
+++ b/cc/layer_tree_host_unittest.cc
@@ -7,10 +7,12 @@
 #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/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"
@@ -20,8 +22,8 @@
 #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 "testing/gmock/include/gmock/gmock.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebSize.h"
@@ -2018,5 +2020,56 @@ TEST(LayerTreeHostTest, PartialUpdatesWithDelegatingRendererAndSoftwareContent)
     EXPECT_EQ(0u, host->settings().maxPartialTextureUpdates);
 }
 
+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