cc: Make separate interface for BeginFrame ipc from OutputSurface

cc/test/scheduler_test_common.h

 // 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.
 
 #ifndef CC_TEST_SCHEDULER_TEST_COMMON_H_
 #define CC_TEST_SCHEDULER_TEST_COMMON_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 143 matching lines @@
       TestNowSource* now_src);
   friend class TestScheduler;
 };
 
 class TestScheduler : public Scheduler {
  public:
   static scoped_ptr<TestScheduler> Create(
       scoped_refptr<TestNowSource> now_src,
       SchedulerClient* client,
       const SchedulerSettings& scheduler_settings,
-      int layer_tree_host_id) {
+      int layer_tree_host_id,
+      bool use_external_begin_frame_source) {
     // A bunch of tests require Now() to be > BeginFrameArgs::DefaultInterval()
     now_src->AdvanceNow(base::TimeDelta::FromMilliseconds(100));
 
     scoped_refptr<OrderedSimpleTaskRunner> test_task_runner =
         new OrderedSimpleTaskRunner(now_src, true);
     TestSchedulerFrameSourcesConstructor frame_sources_constructor(
         test_task_runner.get(), now_src.get());
-    return make_scoped_ptr(new TestScheduler(now_src,
-                                             client,
-                                             scheduler_settings,
-                                             layer_tree_host_id,
-                                             test_task_runner,
-                                             &frame_sources_constructor));
+    scoped_ptr<ExternalBeginFrameSource> external_begin_frame_source;
+    if (use_external_begin_frame_source) {
+      DCHECK(scheduler_settings.begin_frame_scheduling_enabled);
+      external_begin_frame_source.reset(new TestExternalBeginFrameSource);
+    }
+    return make_scoped_ptr(new TestScheduler(
+                                   now_src,
+                                   client,
+                                   scheduler_settings,
+                                   layer_tree_host_id,
+                                   test_task_runner,
+                                   &frame_sources_constructor,
+                                   external_begin_frame_source.Pass()));
   }
 
   // Extra test helper functionality
   bool IsBeginRetroFrameArgsEmpty() const {
     return begin_retro_frame_args_.empty();
   }
 
   BeginFrameSource& frame_source() { return *frame_source_; }
   OrderedSimpleTaskRunner& task_runner() { return *test_task_runner_; }
 
   virtual ~TestScheduler();
 
  protected:
   // Overridden from Scheduler.
   virtual base::TimeTicks Now() const override;
 
  private:
   TestScheduler(
       scoped_refptr<TestNowSource> now_src,
       SchedulerClient* client,
       const SchedulerSettings& scheduler_settings,
       int layer_tree_host_id,
       const scoped_refptr<OrderedSimpleTaskRunner>& test_task_runner,
-      TestSchedulerFrameSourcesConstructor* frame_sources_constructor);
+      TestSchedulerFrameSourcesConstructor* frame_sources_constructor,
+      scoped_ptr<ExternalBeginFrameSource> external_begin_frame_source);
 
   scoped_refptr<TestNowSource> now_src_;
   OrderedSimpleTaskRunner* test_task_runner_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_SCHEDULER_TEST_COMMON_H_