Support exposing Mojo services between render frames, render threads, and their respective hosts.

content/child/child_thread.h

 // 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.
 
 #ifndef CONTENT_CHILD_CHILD_THREAD_H_
 #define CONTENT_CHILD_CHILD_THREAD_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/shared_memory.h"
 #include "base/memory/weak_ptr.h"
 #include "base/power_monitor/power_monitor.h"
 #include "base/tracked_objects.h"
+#include "content/child/mojo/mojo_application.h"
 #include "content/common/content_export.h"
 #include "content/common/message_router.h"
 #include "ipc/ipc_message.h"  // For IPC_MESSAGE_LOG_ENABLED.
-#include "mojo/public/interfaces/service_provider/service_provider.mojom.h"
 
 namespace base {
 class MessageLoop;
 
 namespace debug {
 class TraceMemoryController;
 }  // namespace debug
 }  // namespace base
 
 namespace IPC {
 class SyncChannel;
 class SyncMessageFilter;
 }  // namespace IPC
 
 namespace blink {
 class WebFrame;
 }  // namespace blink
 
 namespace webkit_glue {
 class ResourceLoaderBridge;
 }  // namespace webkit_glue
 
 namespace content {
 class ChildHistogramMessageFilter;
 class ChildResourceMessageFilter;
 class ChildSharedBitmapManager;
 class FileSystemDispatcher;
-class MojoApplication;
 class ServiceWorkerDispatcher;
 class ServiceWorkerMessageFilter;
 class QuotaDispatcher;
 class QuotaMessageFilter;
 class ResourceDispatcher;
 class SocketStreamDispatcher;
 class ThreadSafeSender;
 class WebSocketDispatcher;
 struct RequestInfo;
 
 // The main thread of a child process derives from this class.
-class CONTENT_EXPORT ChildThread
-    : public IPC::Listener,
-      public IPC::Sender,
-      public NON_EXPORTED_BASE(mojo::ServiceProvider) {
+class CONTENT_EXPORT ChildThread : public IPC::Listener, public IPC::Sender {
  public:
   // Creates the thread.
   ChildThread();
   // Used for single-process mode and for in process gpu mode.
   explicit ChildThread(const std::string& channel_name);
   // ChildProcess::main_thread() is reset after Shutdown(), and before the
   // destructor, so any subsystem that relies on ChildProcess::main_thread()
   // must be terminated before Shutdown returns. In particular, if a subsystem
   // has a thread that post tasks to ChildProcess::main_thread(), that thread
   // should be joined in Shutdown().
@@ skipping 73 matching lines @@
 
   // Returns the one child thread. Can only be called on the main thread.
   static ChildThread* current();
 
 #if defined(OS_ANDROID)
   // Called on Android's service thread to shutdown the main thread of this
   // process.
   static void ShutdownThread();
 #endif
 
+  ServiceRegistry* service_registry() const {
+    return mojo_application_->service_registry();
+  }
+
  protected:
   friend class ChildProcess;
 
   // Called when the process refcount is 0.
   void OnProcessFinalRelease();
 
   virtual bool OnControlMessageReceived(const IPC::Message& msg);
 
   void set_on_channel_error_called(bool on_channel_error_called) {
     on_channel_error_called_ = on_channel_error_called;
   }
 
   // IPC::Listener implementation:
   virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
   virtual void OnChannelConnected(int32 peer_pid) OVERRIDE;
   virtual void OnChannelError() OVERRIDE;
 
-  // mojo::ServiceProvider implementation:
-  virtual void ConnectToService(
-      const mojo::String& service_url,
-      const mojo::String& service_name,
-      mojo::ScopedMessagePipeHandle message_pipe,
-      const mojo::String& requestor_url) OVERRIDE;
-
  private:
   class ChildThreadMessageRouter : public MessageRouter {
    public:
     // |sender| must outlive this object.
     explicit ChildThreadMessageRouter(IPC::Sender* sender);
     virtual bool Send(IPC::Message* msg) OVERRIDE;
 
    private:
     IPC::Sender* const sender_;
   };
@@ skipping 67 matching lines @@
   scoped_ptr<base::PowerMonitor> power_monitor_;
 
   bool in_browser_process_;
 
   DISALLOW_COPY_AND_ASSIGN(ChildThread);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_CHILD_CHILD_THREAD_H_