[compositorworker] Register compositor proxies with proxy client

third_party/WebKit/Source/web/CompositorProxyClientImpl.cpp

Index: third_party/WebKit/Source/web/CompositorProxyClientImpl.cpp
diff --git a/third_party/WebKit/Source/web/CompositorProxyClientImpl.cpp b/third_party/WebKit/Source/web/CompositorProxyClientImpl.cpp
index 785f096b53c210fa47430bbbf0c614d36fad27c0..f477ca2bcabce6c21fc276dd52f500bc44077150 100644
--- a/third_party/WebKit/Source/web/CompositorProxyClientImpl.cpp
+++ b/third_party/WebKit/Source/web/CompositorProxyClientImpl.cpp
@@ -23,6 +23,7 @@ DEFINE_TRACE(CompositorProxyClientImpl)
     CompositorProxyClient::trace(visitor);
     visitor->trace(m_mutator);
     visitor->trace(m_globalScope);
+    visitor->trace(m_proxies);
 }
 
 void CompositorProxyClientImpl::setGlobalScope(WorkerGlobalScope* scope)
@@ -64,4 +65,14 @@ bool CompositorProxyClientImpl::executeAnimationFrameCallbacks(double monotonicT
     return shouldReinvoke;
 }
 
+void CompositorProxyClientImpl::registerCompositorProxy(CompositorProxy* proxy)
+{
+    m_proxies.add(proxy);
+}
+
+void CompositorProxyClientImpl::unregisterCompositorProxy(CompositorProxy* proxy)
+{
+    m_proxies.remove(proxy);
+}
+
 } // namespace blink