ExtensionFunctionDispatcher should use base::Process::Current() if single process mode.

extensions/browser/extension_function_dispatcher.cc

 // Copyright 2014 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 "extensions/browser/extension_function_dispatcher.h"
 
 #include "base/bind.h"
 #include "base/json/json_string_value_serializer.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
@@ skipping 168 matching lines @@
         weak_ptr_factory_.GetWeakPtr(),
         request_id);
   }
 
  private:
   void OnExtensionFunctionCompleted(int request_id,
                                     ExtensionFunction::ResponseType type,
                                     const base::ListValue& results,
                                     const std::string& error,
                                     functions::HistogramValue histogram_value) {
-    base::Process process = base::Process::DeprecatedGetProcessFromHandle(
-        render_view_host_->GetProcess()->GetHandle());
+    base::Process process =
+        content::RenderProcessHost::run_renderer_in_process()
+            ? base::Process::Current()
+            : base::Process::DeprecatedGetProcessFromHandle(
+                  render_view_host_->GetProcess()->GetHandle());
     CommonResponseCallback(render_view_host_, render_view_host_->GetRoutingID(),
                            process, request_id, type, results, error,
                            histogram_value);
   }
 
   base::WeakPtr<ExtensionFunctionDispatcher> dispatcher_;
   content::RenderViewHost* render_view_host_;
   base::WeakPtrFactory<UIThreadResponseCallbackWrapper> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(UIThreadResponseCallbackWrapper);
@@ skipping 284 matching lines @@
 // static
 void ExtensionFunctionDispatcher::SendAccessDenied(
     const ExtensionFunction::ResponseCallback& callback,
     functions::HistogramValue histogram_value) {
   base::ListValue empty_list;
   callback.Run(ExtensionFunction::FAILED, empty_list,
                "Access to extension API denied.", histogram_value);
 }
 
 }  // namespace extensions