cc: Parameterize the main thread task runner

cc/trees/layer_tree_host_impl_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_impl.h"
 
 #include <cmath>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 58 matching lines @@
 using ::testing::_;
 using media::VideoFrame;
 
 namespace cc {
 namespace {
 
 class LayerTreeHostImplTest : public testing::Test,
                               public LayerTreeHostImplClient {
  public:
   LayerTreeHostImplTest()
-      : proxy_(base::MessageLoopProxy::current()),
+      : proxy_(base::MessageLoopProxy::current(),
+               base::MessageLoopProxy::current()),
         always_impl_thread_(&proxy_),
         always_main_thread_blocked_(&proxy_),
         shared_bitmap_manager_(new TestSharedBitmapManager()),
         on_can_draw_state_changed_called_(false),
         did_notify_ready_to_activate_(false),
         did_request_commit_(false),
         did_request_redraw_(false),
         did_request_animate_(false),
         did_request_manage_tiles_(false),
         did_upload_visible_tile_(false),
@@ skipping 6604 matching lines @@
 
   host_impl_->Animate(start_time + base::TimeDelta::FromMilliseconds(200));
   host_impl_->UpdateAnimationState(true);
 
   EXPECT_EQ(gfx::Vector2dF(0, 50), scrolling_layer->TotalScrollOffset());
   EXPECT_EQ(NULL, host_impl_->CurrentlyScrollingLayer());
 }
 
 }  // namespace
 }  // namespace cc