[DevTools] Handle emulation in embedder, call into web API.

content/renderer/devtools/devtools_agent.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 "content/renderer/devtools/devtools_agent.h"
 
 #include <map>
 
 #include "base/lazy_instance.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 87 matching lines @@
   IPC_BEGIN_MESSAGE_MAP(DevToolsAgent, message)
     IPC_MESSAGE_HANDLER(DevToolsAgentMsg_Attach, OnAttach)
     IPC_MESSAGE_HANDLER(DevToolsAgentMsg_Reattach, OnReattach)
     IPC_MESSAGE_HANDLER(DevToolsAgentMsg_Detach, OnDetach)
     IPC_MESSAGE_HANDLER(DevToolsAgentMsg_DispatchOnInspectorBackend,
                         OnDispatchOnInspectorBackend)
     IPC_MESSAGE_HANDLER(DevToolsAgentMsg_InspectElement, OnInspectElement)
     IPC_MESSAGE_HANDLER(DevToolsAgentMsg_AddMessageToConsole,
                         OnAddMessageToConsole)
     IPC_MESSAGE_HANDLER(DevToolsMsg_SetupDevToolsClient, OnSetupDevToolsClient)
+    IPC_MESSAGE_HANDLER(DevToolsMsg_EnableDeviceEmulation,
+                        OnEnableDeviceEmulation)
+    IPC_MESSAGE_HANDLER(DevToolsMsg_DisableDeviceEmulation,
+                        OnDisableDeviceEmulation)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
   if (message.type() == FrameMsg_Navigate::ID ||
       message.type() == ViewMsg_Close::ID)
     ContinueProgram();  // Don't want to swallow the message.
 
   return handled;
 }
 
@@ skipping 213 matching lines @@
 }
 
 void DevToolsAgent::OnSetupDevToolsClient() {
   // We only want to register once per render view.
   if (is_devtools_client_)
     return;
   is_devtools_client_ = true;
   new DevToolsClient(main_render_frame_);
 }
 
+void DevToolsAgent::OnEnableDeviceEmulation(
+    const blink::WebDeviceEmulationParams& params) {
+  GetRenderViewImpl()->EnableScreenMetricsEmulation(params);
+}
+
+void DevToolsAgent::OnDisableDeviceEmulation() {
+  GetRenderViewImpl()->DisableScreenMetricsEmulation();
+}
+
 WebDevToolsAgent* DevToolsAgent::GetWebAgent() {
   WebView* web_view = main_render_frame_->GetRenderView()->GetWebView();
   if (!web_view)
     return NULL;
   return web_view->devToolsAgent();
 }
 
 RenderViewImpl* DevToolsAgent::GetRenderViewImpl() {
   return static_cast<RenderViewImpl*>(main_render_frame_->GetRenderView());
 }
 
 bool DevToolsAgent::IsAttached() {
   return is_attached_;
 }
 
 }  // namespace content