Plugin Power Saver: Throttled Plugins should block TCPSocket reads.

content/browser/renderer_host/render_message_filter.cc

Index: content/browser/renderer_host/render_message_filter.cc
diff --git a/content/browser/renderer_host/render_message_filter.cc b/content/browser/renderer_host/render_message_filter.cc
index c208323a63c578146f321da8d4863186311f198e..587c49e063247c836e912f8bc1cd0a9ba222db97 100644
--- a/content/browser/renderer_host/render_message_filter.cc
+++ b/content/browser/renderer_host/render_message_filter.cc
@@ -395,6 +395,8 @@ bool RenderMessageFilter::OnMessageReceived(const IPC::Message& message) {
                         OnDidDeleteOutOfProcessPepperInstance)
     IPC_MESSAGE_HANDLER(ViewHostMsg_OpenChannelToPpapiBroker,
                         OnOpenChannelToPpapiBroker)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_PluginInstanceThrottleStateChange,
+                        OnPluginInstanceThrottleStateChange)
 #endif
 #if defined(OS_MACOSX)
     IPC_MESSAGE_HANDLER_GENERIC(ViewHostMsg_SwapCompositorFrame,
@@ -817,6 +819,15 @@ void RenderMessageFilter::OnOpenChannelToPpapiBroker(
       path,
       new OpenChannelToPpapiBrokerCallback(this, routing_id));
 }
+
+void RenderMessageFilter::OnPluginInstanceThrottleStateChange(
+    int plugin_child_id,
+    int32 pp_instance,
+    bool is_throttled) {
+  // Feature is only implemented for non-external Plugins.
+  PpapiPluginProcessHost::OnPluginInstanceThrottleStateChange(
+      plugin_child_id, pp_instance, is_throttled);
+}
 #endif  // defined(ENABLE_PLUGINS)
 
 void RenderMessageFilter::OnGenerateRoutingID(int* route_id) {