Plugin Power Saver: Enable JS access to throttled plugins.

components/plugins/renderer/loadable_plugin_placeholder.cc

Index: components/plugins/renderer/loadable_plugin_placeholder.cc
diff --git a/components/plugins/renderer/loadable_plugin_placeholder.cc b/components/plugins/renderer/loadable_plugin_placeholder.cc
index b1567c8642c58ba5b93a648374b355056d57bd1d..8bb9d4ad28c264a74fdd314c32694b839b04689b 100644
--- a/components/plugins/renderer/loadable_plugin_placeholder.cc
+++ b/components/plugins/renderer/loadable_plugin_placeholder.cc
@@ -247,6 +247,17 @@ void LoadablePluginPlaceholder::PluginDestroyed() {
   PluginPlaceholder::PluginDestroyed();
 }
 
+v8::Local<v8::Object> LoadablePluginPlaceholder::GetV8ScriptableObject(
+    v8::Isolate* isolate) const {
+#if defined(ENABLE_PLUGINS)
+  // Pass through JavaScript access to the underlying throttled plugin.
+  if (premade_throttler_ && premade_throttler_->GetWebPlugin()) {
+    return premade_throttler_->GetWebPlugin()->v8ScriptableObject(isolate);
+  }
+#endif
+  return v8::Local<v8::Object>();
+}
+
 void LoadablePluginPlaceholder::WasShown() {
   if (is_blocked_for_background_tab_) {
     is_blocked_for_background_tab_ = false;