DevTools: untangle device discovery request from the devtools android bridge.

content/browser/devtools/devtools_agent_host_impl.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/browser/devtools/devtools_agent_host_impl.h"
 
 #include <map>
 #include <vector>
 
 #include "base/json/json_writer.h"
@@ skipping 183 matching lines @@
 }
 
 std::string DevToolsAgentHostImpl::GetDescription() {
   return "";
 }
 
 GURL DevToolsAgentHostImpl::GetFaviconURL() {
   return GURL();
 }
 
+std::string DevToolsAgentHostImpl::GetFrontendURL() {
+  return std::string();
+}
+
 base::TimeTicks DevToolsAgentHostImpl::GetLastActivityTime() {
   return base::TimeTicks();
 }
 
 BrowserContext* DevToolsAgentHostImpl::GetBrowserContext() {
   return nullptr;
 }
 
 WebContents* DevToolsAgentHostImpl::GetWebContents() {
   return NULL;
@@ skipping 140 matching lines @@
     if (message_buffer_.size() != message_buffer_size_)
       return false;
     callback_.Run(chunk.session_id, message_buffer_);
     message_buffer_ = std::string();
     message_buffer_size_ = 0;
   }
   return true;
 }
 
 }  // namespace content