First pass at making the proxy handle multiple renderers. This associates the...

ppapi/proxy/ppb_instance_proxy.cc

 // Copyright (c) 2010 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_instance_proxy.h"
 
 #include "ppapi/c/pp_var.h"
 #include "ppapi/c/ppb_instance.h"
 #include "ppapi/proxy/plugin_dispatcher.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/proxy/serialized_var.h"
 
 namespace pp {
 namespace proxy {
 
 namespace {
 
 PP_Var GetWindowObject(PP_Instance instance) {
-  Dispatcher* dispatcher = PluginDispatcher::Get();
+  PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance);
+  if (!dispatcher)
+    return PP_MakeUndefined();
+
   ReceiveSerializedVarReturnValue result;
   dispatcher->Send(new PpapiHostMsg_PPBInstance_GetWindowObject(
       INTERFACE_ID_PPB_INSTANCE, instance, &result));
   return result.Return(dispatcher);
 }
 
 PP_Var GetOwnerElementObject(PP_Instance instance) {
-  Dispatcher* dispatcher = PluginDispatcher::Get();
+  PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance);
+  if (!dispatcher)
+    return PP_MakeUndefined();
+
   ReceiveSerializedVarReturnValue result;
   dispatcher->Send(new PpapiHostMsg_PPBInstance_GetOwnerElementObject(
           INTERFACE_ID_PPB_INSTANCE, instance, &result));
   return result.Return(dispatcher);
 }
 
 PP_Bool BindGraphics(PP_Instance instance, PP_Resource device) {
-  PP_Bool result;
-  PluginDispatcher::Get()->Send(new PpapiHostMsg_PPBInstance_BindGraphics(
+  PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance);
+  if (!dispatcher)
+    return PP_FALSE;
+
+  PP_Bool result = PP_FALSE;
+  dispatcher->Send(new PpapiHostMsg_PPBInstance_BindGraphics(
       INTERFACE_ID_PPB_INSTANCE, instance, device, &result));
   return result;
 }
 
 PP_Bool IsFullFrame(PP_Instance instance) {
-  PP_Bool result;
-  PluginDispatcher::Get()->Send(new PpapiHostMsg_PPBInstance_IsFullFrame(
+  PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(instance);
+  if (!dispatcher)
+    return PP_FALSE;
+
+  PP_Bool result = PP_FALSE;
+  dispatcher->Send(new PpapiHostMsg_PPBInstance_IsFullFrame(
       INTERFACE_ID_PPB_INSTANCE, instance, &result));
   return result;
 }
 
 PP_Var ExecuteScript(PP_Instance instance, PP_Var script, PP_Var* exception) {
-  Dispatcher* dispatcher = PluginDispatcher::Get();
+  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_PPBInstance_ExecuteScript(
       INTERFACE_ID_PPB_INSTANCE, instance,
       SerializedVarSendInput(dispatcher, script), &se, &result));
   return result.Return(dispatcher);
 }
@@ skipping 73 matching lines @@
     SerializedVarOutParam out_exception,
     SerializedVarReturnValue result) {
   result.Return(dispatcher(), ppb_instance_target()->ExecuteScript(
       instance,
       script.Get(dispatcher()),
       out_exception.OutParam(dispatcher())));
 }
 
 }  // namespace proxy
 }  // namespace pp