Refactor GuestViewContainer to split out WebView related logic and MimeHandlerView related logic.

content/renderer/render_frame_impl.cc

 // Copyright 2013 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/render_frame_impl.h"
 
 #include <map>
 #include <string>
 
 #include "base/auto_reset.h"
@@ skipping 1599 matching lines @@
     const blink::WebPluginParams& params) {
   DCHECK_EQ(frame_, frame);
   blink::WebPlugin* plugin = NULL;
   if (GetContentClient()->renderer()->OverrideCreatePlugin(
           this, frame, params, &plugin)) {
     return plugin;
   }
 
   if (base::UTF16ToUTF8(params.mimeType) == kBrowserPluginMimeType) {
     scoped_ptr<BrowserPluginDelegate> browser_plugin_delegate(
-        GetContentClient()->renderer()->CreateBrowserPluginDelegate(
-            this, std::string()));
+        GetContentClient()->renderer()->CreateBrowserPluginDelegate(this,
+            kBrowserPluginMimeType));
     return render_view_->GetBrowserPluginManager()->CreateBrowserPlugin(
         render_view_.get(), frame, browser_plugin_delegate.Pass());
   }
 
 #if defined(ENABLE_PLUGINS)
   WebPluginInfo info;
   std::string mime_type;
   bool found = false;
   Send(new FrameHostMsg_GetPluginInfo(
       routing_id_, params.url, frame->top()->document().url(),
@@ skipping 2475 matching lines @@
 
 #if defined(ENABLE_BROWSER_CDMS)
 RendererCdmManager* RenderFrameImpl::GetCdmManager() {
   if (!cdm_manager_)
     cdm_manager_ = new RendererCdmManager(this);
   return cdm_manager_;
 }
 #endif  // defined(ENABLE_BROWSER_CDMS)
 
 }  // namespace content