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

ppapi/proxy/ppb_testing_proxy.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ppapi/proxy/ppb_testing_proxy.h"
 
 #include "base/message_loop/message_loop.h"
 #include "ppapi/c/private/ppb_testing_private.h"
 #include "ppapi/proxy/enter_proxy.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
@@ skipping 62 matching lines @@
   uint32_t result = 0;
   dispatcher->Send(new PpapiHostMsg_PPBTesting_GetLiveObjectsForInstance(
       API_ID_PPB_TESTING, instance_id, &result));
   return result;
 }
 
 PP_Bool IsOutOfProcess() {
   return PP_TRUE;
 }
 
-PP_Bool IsPeripheral(PP_Instance instance_id) {
+PP_Var GetPowerSaverStatus(PP_Instance instance_id) {
   ProxyAutoLock lock;
   PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance_id);
   if (!dispatcher)
-    return PP_FALSE;
+    return PP_MakeUndefined();
 
-  PP_Bool result = PP_FALSE;
-  dispatcher->Send(new PpapiHostMsg_PPBTesting_IsPeripheral(
+  ReceiveSerializedVarReturnValue result;
+  dispatcher->Send(new PpapiHostMsg_PPBTesting_GetPowerSaverStatus(
       API_ID_PPB_TESTING, instance_id, &result));
-  return result;
+  return result.Return(dispatcher);
+}
+
+void SubscribeToPowerSaverNotifications(PP_Instance instance_id) {
+  ProxyAutoLock lock;
+  PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance_id);
+  if (!dispatcher)
+    return;
+
+  dispatcher->Send(
+      new PpapiHostMsg_PPBTesting_SubscribeToPowerSaverNotifications(
+          API_ID_PPB_TESTING, instance_id));
 }
 
 void SimulateInputEvent(PP_Instance instance_id, PP_Resource input_event) {
   ProxyAutoLock lock;
   PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance_id);
   if (!dispatcher)
     return;
   EnterResourceNoLock<PPB_InputEvent_API> enter(input_event, false);
   if (enter.failed())
     return;
@@ skipping 40 matching lines @@
   // TODO(raymes): Implement this if we need it.
   NOTIMPLEMENTED();
 }
 
 const PPB_Testing_Private testing_interface = {
     &ReadImageData,
     &RunMessageLoop,
     &QuitMessageLoop,
     &GetLiveObjectsForInstance,
     &IsOutOfProcess,
-    &IsPeripheral,
+    &GetPowerSaverStatus,
+    &SubscribeToPowerSaverNotifications,
     &SimulateInputEvent,
     &GetDocumentURL,
     &GetLiveVars,
     &SetMinimumArrayBufferSizeForShmem,
     &RunV8GC};
 
 }  // namespace
 
 PPB_Testing_Proxy::PPB_Testing_Proxy(Dispatcher* dispatcher)
     : InterfaceProxy(dispatcher),
@@ skipping 15 matching lines @@
 bool PPB_Testing_Proxy::OnMessageReceived(const IPC::Message& msg) {
   if (!dispatcher()->permissions().HasPermission(PERMISSION_TESTING))
     return false;
 
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(PPB_Testing_Proxy, msg)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBTesting_ReadImageData,
                         OnMsgReadImageData)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBTesting_GetLiveObjectsForInstance,
                         OnMsgGetLiveObjectsForInstance)
-    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBTesting_IsPeripheral, OnMsgIsPeripheral)
+    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBTesting_GetPowerSaverStatus,
+                        OnMsgGetPowerSaverStatus)
+    IPC_MESSAGE_HANDLER(
+        PpapiHostMsg_PPBTesting_SubscribeToPowerSaverNotifications,
+        OnMsgSubscribeToPowerSaverNotifications)
     IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBTesting_SimulateInputEvent,
                         OnMsgSimulateInputEvent)
     IPC_MESSAGE_HANDLER(
         PpapiHostMsg_PPBTesting_SetMinimumArrayBufferSizeForShmem,
         OnMsgSetMinimumArrayBufferSizeForShmem)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
@@ skipping 12 matching lines @@
 
 void PPB_Testing_Proxy::OnMsgQuitMessageLoop(PP_Instance instance) {
   ppb_testing_impl_->QuitMessageLoop(instance);
 }
 
 void PPB_Testing_Proxy::OnMsgGetLiveObjectsForInstance(PP_Instance instance,
                                                        uint32_t* result) {
   *result = ppb_testing_impl_->GetLiveObjectsForInstance(instance);
 }
 
-void PPB_Testing_Proxy::OnMsgIsPeripheral(PP_Instance instance,
-                                          PP_Bool* result) {
-  *result = ppb_testing_impl_->IsPeripheral(instance);
+void PPB_Testing_Proxy::OnMsgGetPowerSaverStatus(
+    PP_Instance instance,
+    SerializedVarReturnValue result) {
+  result.Return(dispatcher(), ppb_testing_impl_->GetPowerSaverStatus(instance));
+}
+
+void PPB_Testing_Proxy::OnMsgSubscribeToPowerSaverNotifications(
+    PP_Instance instance) {
+  ppb_testing_impl_->SubscribeToPowerSaverNotifications(instance);
 }
 
 void PPB_Testing_Proxy::OnMsgSimulateInputEvent(
     PP_Instance instance,
     const InputEventData& input_event) {
   scoped_refptr<PPB_InputEvent_Shared> input_event_impl(
       new PPB_InputEvent_Shared(OBJECT_IS_PROXY, instance, input_event));
   ppb_testing_impl_->SimulateInputEvent(instance,
                                         input_event_impl->pp_resource());
 }
 
 void PPB_Testing_Proxy::OnMsgSetMinimumArrayBufferSizeForShmem(
     uint32_t threshold) {
   RawVarDataGraph::SetMinimumArrayBufferSizeForShmemForTest(threshold);
 }
 
 }  // namespace proxy
 }  // namespace ppapi