cc: Force layer tree tests to go idle before exiting.

cc/thread_proxy.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/thread_proxy.h"
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
 #include "cc/delay_based_time_source.h"
 #include "cc/draw_quad.h"
@@ skipping 959 matching lines @@
 
 ThreadProxy::BeginFrameAndCommitState::BeginFrameAndCommitState()
     : memoryAllocationLimitBytes(0)
 {
 }
 
 ThreadProxy::BeginFrameAndCommitState::~BeginFrameAndCommitState()
 {
 }
 
+bool ThreadProxy::commitPendingForTesting()
+{
+    DCHECK(isMainThread());
+    CommitPendingRequest commitPendingRequest;
+    {
+        DebugScopedSetMainThreadBlocked mainThreadBlocked(this);
+        Proxy::implThread()->postTask(base::Bind(&ThreadProxy::commitPendingOnImplThreadForTesting, base::Unretained(this), &commitPendingRequest));
+        commitPendingRequest.completion.wait();
+    }
+    return commitPendingRequest.commitPending;
+}
+
+void ThreadProxy::commitPendingOnImplThreadForTesting(CommitPendingRequest* request)
+{
+    DCHECK(isImplThread());
+    request->commitPending = m_schedulerOnImplThread->commitPending();
+    request->completion.signal();
+}
+
 }  // namespace cc