cc: Add scheduler support for invalidating content on impl thread.

cc/scheduler/scheduler_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/scheduler/scheduler.h"
 
 #include <stddef.h>
 
 #include <string>
 #include <vector>
@@ skipping 153 matching lines @@
   }
   void ScheduledActionPrepareTiles() override {
     PushAction("ScheduledActionPrepareTiles");
     scheduler_->WillPrepareTiles();
     scheduler_->DidPrepareTiles();
   }
   void ScheduledActionInvalidateCompositorFrameSink() override {
     actions_.push_back("ScheduledActionInvalidateCompositorFrameSink");
     states_.push_back(scheduler_->AsValue());
   }
+  void ScheduledActionPerformImplSideInvalidation() override {
+    PushAction("ScheduledActionPerformImplSideInvalidation");
+  }
 
   void SendBeginMainFrameNotExpectedSoon() override {
     PushAction("SendBeginMainFrameNotExpectedSoon");
   }
 
   bool IsInsideBeginImplFrame() const { return inside_begin_impl_frame_; }
 
   base::Callback<bool(void)> InsideBeginImplFrame(bool state) {
     return base::Bind(&FakeSchedulerClient::InsideBeginImplFrameCallback,
                       base::Unretained(this), state);
@@ skipping 3067 matching lines @@
 }
 
 TEST_F(SchedulerTest, BeginMainFrameOnCriticalPath_AHS) {
   EXPECT_FALSE(BeginMainFrameOnCriticalPath(
       SMOOTHNESS_TAKES_PRIORITY,
       ScrollHandlerState::SCROLL_AFFECTS_SCROLL_HANDLER, kSlowDuration));
 }
 
 }  // namespace
 }  // namespace cc