cc: Fix infinite BeginFrame that Scheduler causes.

cc/scheduler/scheduler_state_machine.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_state_machine.h"
 
 #include "base/format_macros.h"
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
 
@@ skipping 346 matching lines @@
     return true;
 
   if (visible_ && swap_used_incomplete_tile_)
     return true;
 
   return needs_redraw_ && visible_ &&
          output_surface_state_ == OUTPUT_SURFACE_ACTIVE;
 }
 
 bool SchedulerStateMachine::ProactiveBeginFrameWantedByImplThread() const {
+  // Do not be proactive when invisible.
+  if (!visible_ || output_surface_state_ != OUTPUT_SURFACE_ACTIVE)
+    return false;
+
   // We should proactively request a BeginFrame if a commit is pending.
-  if (needs_commit_ || needs_forced_commit_ ||
-      commit_state_ != COMMIT_STATE_IDLE)
-    return true;
-
-  return false;
+  return (needs_commit_ || needs_forced_commit_ ||
+      commit_state_ != COMMIT_STATE_IDLE);
 }
 
 void SchedulerStateMachine::DidEnterBeginFrame(const BeginFrameArgs& args) {
   inside_begin_frame_ = true;
   last_begin_frame_args_ = args;
 }
 
 void SchedulerStateMachine::DidLeaveBeginFrame() {
   current_frame_number_++;
   inside_begin_frame_ = false;
@@ skipping 87 matching lines @@
 bool SchedulerStateMachine::HasInitializedOutputSurface() const {
   return output_surface_state_ == OUTPUT_SURFACE_ACTIVE;
 }
 
 void SchedulerStateMachine::SetMaximumNumberOfFailedDrawsBeforeDrawIsForced(
     int num_draws) {
   maximum_number_of_failed_draws_before_draw_is_forced_ = num_draws;
 }
 
 }  // namespace cc