Make RenderThreadImpl a client of memory coordinator

third_party/WebKit/Source/platform/exported/WebMemoryCoordinator.cpp

Index: third_party/WebKit/Source/platform/exported/WebMemoryCoordinator.cpp
diff --git a/third_party/WebKit/Source/platform/exported/WebMemoryCoordinator.cpp b/third_party/WebKit/Source/platform/exported/WebMemoryCoordinator.cpp
index 52d5cb4865bfa899c38098a527538d953bf2b43c..dd7efb80213d8115e5e421b176a8d6f863b5ef93 100644
--- a/third_party/WebKit/Source/platform/exported/WebMemoryCoordinator.cpp
+++ b/third_party/WebKit/Source/platform/exported/WebMemoryCoordinator.cpp
@@ -13,6 +13,10 @@ void WebMemoryCoordinator::onMemoryPressure(
   MemoryCoordinator::instance().onMemoryPressure(pressureLevel);
 }
 
+void WebMemoryCoordinator::onMemoryStateChange(MemoryState state) {
+  MemoryCoordinator::instance().onMemoryStateChange(state);
+}
+
 void WebMemoryCoordinator::prepareToSuspend() {
   MemoryCoordinator::instance().prepareToSuspend();
 }