cc: Add support for sending BeginFrames for video.

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 <string>
 #include <vector>
 
 #include "base/logging.h"
@@ skipping 436 matching lines @@
   EXPECT_FALSE(client_->needs_begin_frames());
   scheduler_->SetChildrenNeedBeginFrames(true);
   EXPECT_SINGLE_ACTION("SetNeedsBeginFrames(true)", client_);
   EXPECT_TRUE(client_->needs_begin_frames());
 
   client_->Reset();
   EXPECT_SCOPED(AdvanceFrame());
   EXPECT_TRUE(client_->begin_frame_is_sent_to_children());
 }
 
+TEST_F(SchedulerTest, VideoNeedsBeginFrames) {
+  scheduler_settings_.use_external_begin_frame_source = true;
+  SetUpScheduler(true);
+
+  scheduler_->SetVideoNeedsBeginFrames(true);
+  EXPECT_SINGLE_ACTION("SetNeedsBeginFrames(true)", client_);
+  EXPECT_TRUE(client_->needs_begin_frames());
+
+  client_->Reset();
+  EXPECT_SCOPED(AdvanceFrame());
+  EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
+  // WillBeginImplFrame is responsible for sending BeginFrames to video.
+  EXPECT_SINGLE_ACTION("WillBeginImplFrame", client_);
+
+  client_->Reset();
+  EXPECT_SCOPED(AdvanceFrame());
+  EXPECT_TRUE(scheduler_->BeginImplFrameDeadlinePending());
+  EXPECT_SINGLE_ACTION("WillBeginImplFrame", client_);
+
+  client_->Reset();
+  scheduler_->SetVideoNeedsBeginFrames(false);
+  EXPECT_NO_ACTION(client_);
+
+  client_->Reset();
+  task_runner_->RunTasksWhile(client_->ImplFrameDeadlinePending(true));
+  EXPECT_FALSE(scheduler_->BeginImplFrameDeadlinePending());
+  EXPECT_ACTION("SetNeedsBeginFrames(false)", client_, 0, 2);
+  EXPECT_ACTION("SendBeginMainFrameNotExpectedSoon", client_, 1, 2);
+  EXPECT_FALSE(client_->needs_begin_frames());
+}
+
 TEST_F(SchedulerTest, RequestCommit) {
   scheduler_settings_.use_external_begin_frame_source = true;
   SetUpScheduler(true);
 
   // SetNeedsCommit should begin the frame on the next BeginImplFrame.
   scheduler_->SetNeedsCommit();
   EXPECT_SINGLE_ACTION("SetNeedsBeginFrames(true)", client_);
   client_->Reset();
 
   EXPECT_SCOPED(AdvanceFrame());
@@ skipping 2058 matching lines @@
 
   // At the next BeginFrame, authoritative interval is used instead of previous
   // interval.
   EXPECT_NE(initial_interval, scheduler_->begin_impl_frame_args().interval);
   EXPECT_EQ(authoritative_interval,
             scheduler_->begin_impl_frame_args().interval);
 }
 
 }  // namespace
 }  // namespace cc