cc: Check for completed raster tasks at interval.

cc/single_thread_proxy.cc

Index: cc/single_thread_proxy.cc
diff --git a/cc/single_thread_proxy.cc b/cc/single_thread_proxy.cc
index 1301355238382193e31001ec65177f698221ca64..736db6e9c09bfa5396f7a494b7d2d1ff63b00dcd 100644
--- a/cc/single_thread_proxy.cc
+++ b/cc/single_thread_proxy.cc
@@ -281,6 +281,12 @@ void SingleThreadProxy::didUploadVisibleHighResolutionTileOnImplThread()
     NOTREACHED();
 }
 
+void SingleThreadProxy::didDetectIdleRasterOnImplThread()
+{
+    // implSidePainting only.
+    NOTREACHED();
+}
+
 void SingleThreadProxy::setNeedsCommitOnImplThread()
 {
     m_layerTreeHost->scheduleComposite();
@@ -291,6 +297,12 @@ void SingleThreadProxy::setNeedsManageTilesOnImplThread()
     m_layerTreeHost->scheduleComposite();
 }
 
+void SingleThreadProxy::setNeedsCheckForCompletedRasterTasksOnImplThread()
+{
+    // implSidePainting only.
+    NOTREACHED();
+}
+
 void SingleThreadProxy::postAnimationEventsToMainThreadOnImplThread(scoped_ptr<AnimationEventsVector> events, base::Time wallClockTime)
 {
     DCHECK(Proxy::isImplThread());