Plugin Power Saver: Restrict Power Saver to cross-origin.

content/renderer/pepper/pepper_plugin_instance_impl.cc

Index: content/renderer/pepper/pepper_plugin_instance_impl.cc
diff --git a/content/renderer/pepper/pepper_plugin_instance_impl.cc b/content/renderer/pepper/pepper_plugin_instance_impl.cc
index 97a85c90f253966dd8e964bd7232cfe7d199e90f..bb5788fe2e499671aea8a9195dda734371b9159c 100644
--- a/content/renderer/pepper/pepper_plugin_instance_impl.cc
+++ b/content/renderer/pepper/pepper_plugin_instance_impl.cc
@@ -395,7 +395,8 @@ PepperPluginInstanceImpl* PepperPluginInstanceImpl::Create(
     RenderFrameImpl* render_frame,
     PluginModule* module,
     WebPluginContainer* container,
-    const GURL& plugin_url) {
+    const GURL& plugin_url,
+    const GURL& top_frame_url) {
   base::Callback<const void*(const char*)> get_plugin_interface_func =
       base::Bind(&PluginModule::GetPluginInterface, module);
   PPP_Instance_Combined* ppp_instance_combined =
@@ -407,7 +408,8 @@ PepperPluginInstanceImpl* PepperPluginInstanceImpl::Create(
                                       module,
                                       ppp_instance_combined,
                                       container,
-                                      plugin_url);
+                                      plugin_url,
+                                      top_frame_url);
 }
 
 PepperPluginInstanceImpl::ExternalDocumentLoader::ExternalDocumentLoader()
@@ -478,7 +480,8 @@ PepperPluginInstanceImpl::PepperPluginInstanceImpl(
     PluginModule* module,
     ppapi::PPP_Instance_Combined* instance_interface,
     WebPluginContainer* container,
-    const GURL& plugin_url)
+    const GURL& plugin_url,
+    const GURL& top_frame_url)
     : RenderFrameObserver(render_frame),
       render_frame_(render_frame),
       module_(module),
@@ -591,7 +594,8 @@ PepperPluginInstanceImpl::PepperPluginInstanceImpl(
       CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnablePluginPowerSaver);
 
-  if (power_saver_enabled_) {
+  if (power_saver_enabled_ &&
+      plugin_url.GetOrigin() != top_frame_url.GetOrigin()) {
     throttler_.reset(new PepperPluginInstanceThrottler(
         base::Bind(&PepperPluginInstanceImpl::SetPluginThrottled,
                    weak_factory_.GetWeakPtr(), true /* throttled */)));