DevTools: allow embedder handling remote debugger commands.

content/public/browser/devtools_manager_delegate.h

 // Copyright 2014 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.
 
 #ifndef CONTENT_PUBLIC_BROWSER_DEVTOOLS_MANAGER_DELEGATE_H_
 #define CONTENT_PUBLIC_BROWSER_DEVTOOLS_MANAGER_DELEGATE_H_
 
+namespace base {
+class DictionaryValue;
+}
+
 namespace content {
 
 class BrowserContext;
 class DevToolsAgentHost;
 
 class DevToolsManagerDelegate {
  public:
   virtual ~DevToolsManagerDelegate() {}
 
   // Opens the inspector for |agent_host|.
   virtual void Inspect(BrowserContext* browser_context,
                        DevToolsAgentHost* agent_host) = 0;
+
+  // Result ownership is passed to the caller.
+  virtual base::DictionaryValue* HandleCommand(
+      DevToolsAgentHost* agent_host,
+      base::DictionaryValue* command) = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_DEVTOOLS_MANAGER_DELEGATE_H_