Add TestingInstance::EvalScript method which posts a message that the test page can eval().

ppapi/proxy/ppb_testing_proxy.cc

 // Copyright (c) 2011 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.h"
 #include "ppapi/c/dev/ppb_testing_dev.h"
 #include "ppapi/proxy/enter_proxy.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
 #include "ppapi/proxy/ppapi_messages.h"
+#include "ppapi/proxy/serialized_var.h"
 #include "ppapi/shared_impl/ppapi_globals.h"
 #include "ppapi/shared_impl/resource.h"
 #include "ppapi/shared_impl/resource_tracker.h"
 #include "ppapi/thunk/enter.h"
 #include "ppapi/thunk/ppb_input_event_api.h"
 
 using ppapi::thunk::EnterResource;
 using ppapi::thunk::PPB_InputEvent_API;
 
 namespace ppapi {
@@ skipping 58 matching lines @@
     return;
   EnterResource<PPB_InputEvent_API> enter(input_event, false);
   if (enter.failed())
     return;
 
   const InputEventData& input_event_data = enter.object()->GetInputEventData();
   dispatcher->Send(new PpapiHostMsg_PPBTesting_SimulateInputEvent(
       API_ID_PPB_TESTING, instance_id, input_event_data));
 }
 
+PP_Var ExecuteScript(PP_Instance instance,
+                     PP_Var script,
+                     PP_Var* exception) {
+  PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance);
+  if (!dispatcher)
+    return PP_MakeUndefined();
+  ReceiveSerializedException se(dispatcher, exception);
+  if (se.IsThrown())
+    return PP_MakeUndefined();
+
+  ReceiveSerializedVarReturnValue result;
+  dispatcher->Send(new PpapiHostMsg_PPBTesting_ExecuteScript(
+      API_ID_PPB_TESTING, instance,
+      SerializedVarSendInput(dispatcher, script), &se, &result));
+  return result.Return(dispatcher);
+}
+
 const PPB_Testing_Dev testing_interface = {
   &ReadImageData,
   &RunMessageLoop,
   &QuitMessageLoop,
   &GetLiveObjectsForInstance,
   &IsOutOfProcess,
-  &SimulateInputEvent
+  &SimulateInputEvent,
+  &ExecuteScript
 };
 
 InterfaceProxy* CreateTestingProxy(Dispatcher* dispatcher) {
   return new PPB_Testing_Proxy(dispatcher);
 }
 
 }  // namespace
 
 PPB_Testing_Proxy::PPB_Testing_Proxy(Dispatcher* dispatcher)
     : InterfaceProxy(dispatcher),
@@ skipping 13 matching lines @@
     &testing_interface,
     PPB_TESTING_DEV_INTERFACE,
     API_ID_PPB_TESTING,
     false,
     &CreateTestingProxy,
   };
   return &info;
 }
 
 bool PPB_Testing_Proxy::OnMessageReceived(const IPC::Message& msg) {
+  // Prevent the dispatcher from going away during a call to ExecuteScript.
+  // This must happen OUTSIDE of ExecuteScript since the SerializedVars use
+  // the dispatcher upon return of the function (converting the
+  // SerializedVarReturnValue/OutParam to a SerializedVar in the destructor).
+  ScopedModuleReference death_grip(dispatcher());
+
   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_SimulateInputEvent,
                         OnMsgSimulateInputEvent)
+    IPC_MESSAGE_HANDLER(PpapiHostMsg_PPBTesting_ExecuteScript,
+                        OnMsgExecuteScript)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 void PPB_Testing_Proxy::OnMsgReadImageData(
     const HostResource& device_context_2d,
     const HostResource& image,
     const PP_Point& top_left,
     PP_Bool* result) {
@@ skipping 18 matching lines @@
     PP_Instance instance,
     const InputEventData& input_event) {
   scoped_refptr<PPB_InputEvent_Shared> input_event_impl(
       new PPB_InputEvent_Shared(PPB_InputEvent_Shared::InitAsProxy(),
                                 instance,
                                 input_event));
   ppb_testing_impl_->SimulateInputEvent(instance,
                                         input_event_impl->pp_resource());
 }
 
+void PPB_Testing_Proxy::OnMsgExecuteScript(
+    PP_Instance instance,
+    SerializedVarReceiveInput script,
+    SerializedVarOutParam out_exception,
+    SerializedVarReturnValue result) {
+  if (dispatcher()->IsPlugin())
+    NOTREACHED();
+  else
+    static_cast<HostDispatcher*>(dispatcher())->set_allow_plugin_reentrancy();
+
+  result.Return(dispatcher(), ppb_testing_impl_->ExecuteScript(
+      instance,
+      script.Get(dispatcher()),
+      out_exception.OutParam(dispatcher())));
+}
+
 }  // namespace proxy
 }  // namespace ppapi