cc: Parameterize the main thread task runner

cc/layers/layer_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/layers/layer.h"
 
 #include "cc/animation/keyframed_animation_curve.h"
 #include "cc/base/math_util.h"
 #include "cc/layers/layer_impl.h"
 #include "cc/resources/layer_painter.h"
@@ skipping 23 matching lines @@
     Mock::VerifyAndClearExpectations(layer_tree_host_.get());               \
   } while (false)
 
 namespace cc {
 namespace {
 
 class MockLayerTreeHost : public LayerTreeHost {
  public:
   explicit MockLayerTreeHost(FakeLayerTreeHostClient* client)
       : LayerTreeHost(client, NULL, LayerTreeSettings()) {
-    InitializeSingleThreaded(client);
+    InitializeSingleThreaded(client, base::MessageLoopProxy::current());
   }
 
   MOCK_METHOD0(SetNeedsCommit, void());
   MOCK_METHOD0(SetNeedsUpdateLayers, void());
   MOCK_METHOD0(SetNeedsFullTreeSync, void());
 };
 
 class MockLayerPainter : public LayerPainter {
  public:
   virtual void Paint(SkCanvas* canvas,
@@ skipping 811 matching lines @@
   Mock::VerifyAndClearExpectations(layer_tree_host_.get());
 }
 
 class LayerTreeHostFactory {
  public:
   LayerTreeHostFactory()
       : client_(FakeLayerTreeHostClient::DIRECT_3D),
         shared_bitmap_manager_(new TestSharedBitmapManager()) {}
 
   scoped_ptr<LayerTreeHost> Create() {
-    return LayerTreeHost::CreateSingleThreaded(&client_,
-                                               &client_,
-                                               shared_bitmap_manager_.get(),
-                                               LayerTreeSettings()).Pass();
+    return LayerTreeHost::CreateSingleThreaded(
+               &client_,
+               &client_,
+               shared_bitmap_manager_.get(),
+               LayerTreeSettings(),
+               base::MessageLoopProxy::current()).Pass();
   }
 
   scoped_ptr<LayerTreeHost> Create(LayerTreeSettings settings) {
     return LayerTreeHost::CreateSingleThreaded(
-               &client_, &client_, shared_bitmap_manager_.get(), settings)
-        .Pass();
+               &client_,
+               &client_,
+               shared_bitmap_manager_.get(),
+               settings,
+               base::MessageLoopProxy::current()).Pass();
   }
 
  private:
   FakeLayerTreeHostClient client_;
   scoped_ptr<SharedBitmapManager> shared_bitmap_manager_;
 };
 
 void AssertLayerTreeHostMatchesForSubtree(Layer* layer, LayerTreeHost* host) {
   EXPECT_EQ(host, layer->layer_tree_host());
 
@@ skipping 246 matching lines @@
               << "Flags: " << contents_opaque << ", " << layer_opaque << ", "
               << host_opaque << "\n";
         }
       }
     }
   }
 }
 
 }  // namespace
 }  // namespace cc