Plugin Power Saver: Make PPS work well with prerendered pages.

content/renderer/pepper/plugin_instance_throttler_impl.cc

Index: content/renderer/pepper/plugin_instance_throttler_impl.cc
diff --git a/content/renderer/pepper/plugin_instance_throttler_impl.cc b/content/renderer/pepper/plugin_instance_throttler_impl.cc
index 593fb99d7fadb924a36c0e4cd68100d9ef121719..b1918d966cedf8cd07c9d30aca225a8722b109c7 100644
--- a/content/renderer/pepper/plugin_instance_throttler_impl.cc
+++ b/content/renderer/pepper/plugin_instance_throttler_impl.cc
@@ -102,7 +102,7 @@ void PluginInstanceThrottlerImpl::MarkPluginEssential(
   RecordUnthrottleMethodMetric(method);
 
   if (was_throttled)
-    FOR_EACH_OBSERVER(Observer, observer_list_, OnThrottleStateChange());
+    BroadcastThrottleStateChange();
 
   // Notify the Power Saver test plugin of a peripheral status change.
   if (web_plugin_ && web_plugin_->instance() &&
@@ -229,7 +229,19 @@ void PluginInstanceThrottlerImpl::EngageThrottle() {
   }
 
   state_ = THROTTLER_STATE_PLUGIN_THROTTLED;
+  BroadcastThrottleStateChange();
+}
+
+void PluginInstanceThrottlerImpl::BroadcastThrottleStateChange() {
   FOR_EACH_OBSERVER(Observer, observer_list_, OnThrottleStateChange());
+
+  // Notify the Power Saver test plugin of a throttle status change.
+  if (web_plugin_ && web_plugin_->instance() &&
+      plugin_module_name_ == ppapi::kPowerSaverTestPluginName) {
+    web_plugin_->instance()->HandleMessage(ppapi::ScopedPPVar(
+        ppapi::ScopedPPVar::PassRef(),
+        ppapi::StringVar::StringToPPVar("throttleStatusChange")));
+  }

[raymes, 2015/04/29 00:12:34]

It feels a little weird to have this test code in here. Perhaps consider
delegating it out if there is a way to do that which isn't too complicated.

[tommycli, 2015/04/29 20:25:47]

Done.

 }
 
 }  // namespace content