Remove redundant DevToolsManager methods and clean up its clients.

chrome/browser/devtools/devtools_adb_bridge.cc

 // Copyright (c) 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 "chrome/browser/devtools/devtools_adb_bridge.h"
 
 #include <map>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 311 matching lines @@
       return;
     CloseConnection(result, true);
   }
 
   void OnFrameRead(const std::string& message) {
     scoped_ptr<base::Value> value(base::JSONReader::Read(message));
     DictionaryValue* dvalue;
     if (!value || !value->GetAsDictionary(&dvalue))
       return;
 
-    content::DevToolsManager* manager = content::DevToolsManager::GetInstance();
-    content::DevToolsClientHost* client_host =
-        manager->GetDevToolsClientHostFor(proxy_->GetAgentHost());
-    if (client_host)
-      client_host->DispatchOnInspectorFrontend(message);
+    content::DevToolsManager::GetInstance()->
+        DispatchOnInspectorFrontend(proxy_->GetAgentHost(), message);
   }
 
   void OnSocketClosed(int result) {
     proxy_->ConnectionClosed();
   }
 
   std::string id_;
   scoped_refptr<DevToolsAdbBridge::RefCountedAdbThread> adb_thread_;
   scoped_ptr<net::TCPClientSocket> socket_;
   scoped_ptr<content::DevToolsExternalAgentProxy> proxy_;
@@ skipping 173 matching lines @@
   if (!has_message_loop_)
     return;
 
   scoped_refptr<AdbAttachCommand> command(
       new AdbAttachCommand(weak_factory_.GetWeakPtr(), serial, debug_url,
                            frontend_url));
   adb_thread_->message_loop()->PostTask(
       FROM_HERE,
       base::Bind(&AdbAttachCommand::Run, command));
 }