[Extensions] Remove the source_tab_id property on API request messages

extensions/renderer/native_extension_bindings_system.cc

 // Copyright 2016 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/renderer/native_extension_bindings_system.h"
 
 #include "base/command_line.h"
 #include "content/public/common/content_switches.h"
 #include "extensions/common/constants.h"
 #include "extensions/common/extension_api.h"
 #include "extensions/common/extension_messages.h"
 #include "extensions/common/features/feature_provider.h"
-#include "extensions/renderer/extension_frame_helper.h"
 #include "extensions/renderer/script_context.h"
 #include "extensions/renderer/script_context_set.h"
 #include "gin/converter.h"
 #include "third_party/WebKit/public/web/WebDocument.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 
 namespace extensions {
 
 namespace {
 
@@ skipping 149 matching lines @@
   ScriptContext* script_context =
       ScriptContextSet::GetContextByV8Context(context);
 
   GURL url;
   blink::WebLocalFrame* frame = script_context->web_frame();
   if (frame && !frame->document().isNull())
     url = frame->document().url();
   else
     url = script_context->url();
 
-  int tab_id = -1;
-  if (content::RenderFrame* render_frame = script_context->GetRenderFrame()) {
-    ExtensionFrameHelper* frame_helper =
-        ExtensionFrameHelper::Get(render_frame);
-    DCHECK(frame_helper);
-    tab_id = frame_helper->tab_id();
-  }
-
   ExtensionHostMsg_Request_Params params;
   params.name = request->method_name;
   params.arguments.Swap(request->arguments.get());
   params.extension_id = script_context->GetExtensionID();
   params.source_url = url;
-  params.source_tab_id = tab_id;
   params.request_id = request->request_id;
   params.has_callback = request->has_callback;
   params.user_gesture = request->has_user_gesture;
   // TODO(devlin): Make this work in ServiceWorkers.
   params.worker_thread_id = -1;
   params.service_worker_version_id = kInvalidServiceWorkerVersionId;
 
   send_ipc_.Run(script_context, params);
 }
 
 }  // namespace extensions