compositor-worker: blink->cc plumbing

third_party/WebKit/Source/modules/compositorworker/CompositorWorkerGlobalScope.cpp

Index: third_party/WebKit/Source/modules/compositorworker/CompositorWorkerGlobalScope.cpp
diff --git a/third_party/WebKit/Source/modules/compositorworker/CompositorWorkerGlobalScope.cpp b/third_party/WebKit/Source/modules/compositorworker/CompositorWorkerGlobalScope.cpp
index aa495efd7e60256c7eac965fc58fd83a8012af16..543984210fa4c993e24c93f8d84a5e4a6627a913 100644
--- a/third_party/WebKit/Source/modules/compositorworker/CompositorWorkerGlobalScope.cpp
+++ b/third_party/WebKit/Source/modules/compositorworker/CompositorWorkerGlobalScope.cpp
@@ -23,8 +23,11 @@ PassRefPtrWillBeRawPtr<CompositorWorkerGlobalScope> CompositorWorkerGlobalScope:
 
 CompositorWorkerGlobalScope::CompositorWorkerGlobalScope(const KURL& url, const String& userAgent, CompositorWorkerThread* thread, double timeOrigin, PassOwnPtr<SecurityOrigin::PrivilegeData> starterOriginPrivilegeData, PassOwnPtrWillBeRawPtr<WorkerClients> workerClients)
     : WorkerGlobalScope(url, userAgent, thread, timeOrigin, starterOriginPrivilegeData, workerClients)
+    , m_executingAnimationFrameCallbacks(false)
     , m_callbackCollection(this)
+    , m_client(CompositorProxyClient::from(clients()))
 {
+    m_client->setGlobalScope(this);
 }
 
 CompositorWorkerGlobalScope::~CompositorWorkerGlobalScope()
@@ -53,6 +56,9 @@ void CompositorWorkerGlobalScope::postMessage(ExecutionContext* executionContext
 
 int CompositorWorkerGlobalScope::requestAnimationFrame(FrameRequestCallback* callback)
 {
+    const bool shouldSignal = !m_executingAnimationFrameCallbacks && m_callbackCollection.isEmpty();
+    if (shouldSignal)
+        m_client->requestMutation();
     return m_callbackCollection.registerCallback(callback);
 }
 
@@ -61,9 +67,11 @@ void CompositorWorkerGlobalScope::cancelAnimationFrame(int id)
     m_callbackCollection.cancelCallback(id);
 }
 
-void CompositorWorkerGlobalScope::executeAnimationFrameCallbacks(double highResTimeNow)
+bool CompositorWorkerGlobalScope::executeAnimationFrameCallbacks(double highResTimeNow)
 {
+    TemporaryChange<bool> temporaryChange(m_executingAnimationFrameCallbacks, true);
     m_callbackCollection.executeCallbacks(highResTimeNow, highResTimeNow);
+    return !m_callbackCollection.isEmpty();
 }
 
 CompositorWorkerThread* CompositorWorkerGlobalScope::thread() const