cc: Make separate interface for BeginFrame ipc from OutputSurface

cc/trees/layer_tree_host_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.h"
 
 #include <algorithm>
 
 #include "base/auto_reset.h"
 #include "base/synchronization/lock.h"
@@ skipping 1962 matching lines @@
   settings.single_thread_proxy_scheduler = false;
 
   scoped_ptr<SharedBitmapManager> shared_bitmap_manager(
       new TestSharedBitmapManager());
   scoped_ptr<LayerTreeHost> host =
       LayerTreeHost::CreateSingleThreaded(&client,
                                           &client,
                                           shared_bitmap_manager.get(),
                                           NULL,
                                           settings,
-                                          base::MessageLoopProxy::current());
+                                          base::MessageLoopProxy::current(),
+                                          nullptr);

[brianderson, 2014/10/18 00:08:45]

Why is an external source used in the LayerTree tests, but not here?

[simonhong, 2014/10/23 01:03:08]

These four tests didn't use external BeginFrameSource.
But, all other tests except them overrides begin_frame_scheduling_enabled value
when they needed.

   client.SetLayerTreeHost(host.get());
   host->Composite(base::TimeTicks::Now());
 
   EXPECT_EQ(4u, host->settings().max_partial_texture_updates);
 }
 
 TEST(LayerTreeHostTest, PartialUpdatesWithSoftwareRenderer) {
   FakeLayerTreeHostClient client(FakeLayerTreeHostClient::DIRECT_SOFTWARE);
 
   LayerTreeSettings settings;
   settings.max_partial_texture_updates = 4;
   settings.single_thread_proxy_scheduler = false;
 
   scoped_ptr<SharedBitmapManager> shared_bitmap_manager(
       new TestSharedBitmapManager());
   scoped_ptr<LayerTreeHost> host =
       LayerTreeHost::CreateSingleThreaded(&client,
                                           &client,
                                           shared_bitmap_manager.get(),
                                           NULL,
                                           settings,
-                                          base::MessageLoopProxy::current());
+                                          base::MessageLoopProxy::current(),
+                                          nullptr);
   client.SetLayerTreeHost(host.get());
   host->Composite(base::TimeTicks::Now());
 
   EXPECT_EQ(4u, host->settings().max_partial_texture_updates);
 }
 
 TEST(LayerTreeHostTest, PartialUpdatesWithDelegatingRendererAndGLContent) {
   FakeLayerTreeHostClient client(FakeLayerTreeHostClient::DELEGATED_3D);
 
   LayerTreeSettings settings;
   settings.max_partial_texture_updates = 4;
   settings.single_thread_proxy_scheduler = false;
 
   scoped_ptr<SharedBitmapManager> shared_bitmap_manager(
       new TestSharedBitmapManager());
   scoped_ptr<LayerTreeHost> host =
       LayerTreeHost::CreateSingleThreaded(&client,
                                           &client,
                                           shared_bitmap_manager.get(),
                                           NULL,
                                           settings,
-                                          base::MessageLoopProxy::current());
+                                          base::MessageLoopProxy::current(),
+                                          nullptr);
   client.SetLayerTreeHost(host.get());
   host->Composite(base::TimeTicks::Now());
 
   EXPECT_EQ(0u, host->MaxPartialTextureUpdates());
 }
 
 TEST(LayerTreeHostTest,
      PartialUpdatesWithDelegatingRendererAndSoftwareContent) {
   FakeLayerTreeHostClient client(FakeLayerTreeHostClient::DELEGATED_SOFTWARE);
 
   LayerTreeSettings settings;
   settings.max_partial_texture_updates = 4;
   settings.single_thread_proxy_scheduler = false;
 
   scoped_ptr<SharedBitmapManager> shared_bitmap_manager(
       new TestSharedBitmapManager());
   scoped_ptr<LayerTreeHost> host =
       LayerTreeHost::CreateSingleThreaded(&client,
                                           &client,
                                           shared_bitmap_manager.get(),
                                           NULL,
                                           settings,
-                                          base::MessageLoopProxy::current());
+                                          base::MessageLoopProxy::current(),
+                                          nullptr);
   client.SetLayerTreeHost(host.get());
   host->Composite(base::TimeTicks::Now());
 
   EXPECT_EQ(0u, host->MaxPartialTextureUpdates());
 }
 
 class LayerTreeHostTestShutdownWithOnlySomeResourcesEvicted
     : public LayerTreeHostTest {
  public:
   LayerTreeHostTestShutdownWithOnlySomeResourcesEvicted()
@@ skipping 3103 matching lines @@
   }
 
   int commit_count_;
   TestSwapPromiseResult swap_promise_result_[3];
 };
 
 // Impl-side painting is not supported for synchronous compositing.
 SINGLE_THREAD_NOIMPL_TEST_F(LayerTreeHostTestSynchronousCompositeSwapPromise);
 
 }  // namespace cc