mojo leveldb: Get profile and leveldb connected to DOMStorageContext.

content/public/browser/mojo_app_connection.h

 // Copyright 2015 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_MOJO_APP_CONNECTION_H_
 #define CONTENT_PUBLIC_BROWSER_MOJO_APP_CONNECTION_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "content/common/content_export.h"
 #include "mojo/public/cpp/bindings/interface_ptr.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
 #include "mojo/public/cpp/system/message_pipe.h"
 
 namespace content {
 
+class BrowserContext;
+
 // A virtual app URL identifying the browser itself. This should be used for
 // a connection's |requestor_url| when connecting from browser code to apps that
 // don't require a more specific request context.
 CONTENT_EXPORT extern const char kBrowserMojoAppUrl[];
 
 // This provides a way for arbitrary browser code to connect to Mojo apps. These
 // objects are not thread-safe but may be constructed and used on any single
 // thread.
 class CONTENT_EXPORT MojoAppConnection {
  public:
   virtual ~MojoAppConnection() {}
 
   // Creates a new connection to the application at |name| using
   // |requestor_name| to identify the requestor upon connection. This may be
   // called from any thread.
   static scoped_ptr<MojoAppConnection> Create(
+      BrowserContext* context,

[jam, 2016/03/03 16:32:11]

the new parameter should be documented

       const std::string& name,
       const std::string& requestor_name);
 
   // Connects to a service within the application.
   template <typename Interface>
   void GetInterface(mojo::InterfacePtr<Interface>* proxy) {
     GetInterface(Interface::Name_, mojo::GetProxy(proxy).PassMessagePipe());
   }
 
   virtual void GetInterface(const std::string& interface_name,
                             mojo::ScopedMessagePipeHandle handle) = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_MOJO_APP_CONNECTION_H_