upstream SurfaceTextureListener and SurfaceTextureBridge class for android

content/common/android/surface_texture_listener.h

Index: content/common/android/surface_texture_listener.h
diff --git a/content/common/android/surface_texture_listener.h b/content/common/android/surface_texture_listener.h
new file mode 100644
index 0000000000000000000000000000000000000000..e8e2a0f88533b4e9285e426d4e06f039a83ef55c
--- /dev/null
+++ b/content/common/android/surface_texture_listener.h
@@ -0,0 +1,52 @@
+// 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_COMMON_ANDROID_SURFACE_TEXTURE_LISTENER_H_
+#define CONTENT_COMMON_ANDROID_SURFACE_TEXTURE_LISTENER_H_
+#pragma once
+
+#include <jni.h>
+#include "base/callback.h"
+#include "base/memory/ref_counted.h"
+
+namespace base {
+class MessageLoopProxy;
+}
+
+namespace content {
+
+// Listener class for all the callbacks from android SurfaceTexture.
+class SurfaceTextureListener {
+public:
+  // Destroy this listener.
+  void Destroy(JNIEnv* env, jobject obj);
+
+  // A new frame is available to consume.
+  void FrameAvailable(JNIEnv* env, jobject obj);
+
+  static bool RegisterSurfaceTextureListener(JNIEnv* env);
+
+private:
+  SurfaceTextureListener(const base::Closure& callback);
+  ~SurfaceTextureListener();
+
+  friend class SurfaceTextureBridge;
+
+  // Static factory method for the creation of a SurfaceTextureListener.
+  // The native code should not hold any reference to the returned object,
+  // but only use it to pass it up to Java for being referenced by a
+  // SurfaceTexture instance.
+  static jobject CreateSurfaceTextureListener(JNIEnv* env,
+                                              const base::Closure& callback);
+
+  base::Closure callback_;
+
+  scoped_refptr<base::MessageLoopProxy> browser_loop_;
+
+  DISALLOW_IMPLICIT_CONSTRUCTORS(SurfaceTextureListener);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_COMMON_ANDROID_SURFACE_TEXTURE_LISTENER_H_