Added SurfaceTextureGLOwner to create / own GL objects.

ui/gl/android/surface_texture.h

 // Copyright 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.
 
 #ifndef UI_GL_ANDROID_SURFACE_TEXTURE_H_
 #define UI_GL_ANDROID_SURFACE_TEXTURE_H_
 
 #include <jni.h>
 
 #include "base/android/scoped_java_ref.h"
@@ skipping 28 matching lines @@
 
   // Update the texture image to the most recent frame from the image stream.
   void UpdateTexImage();
 
   // Retrieve the 4x4 texture coordinate transform matrix associated with the
   // texture image set by the most recent call to updateTexImage.
   void GetTransformMatrix(float mtx[16]);
 
   // Attach the SurfaceTexture to the texture currently bound to
   // GL_TEXTURE_EXTERNAL_OES.
-  void AttachToGLContext();
+  virtual void AttachToGLContext();
 
   // Detaches the SurfaceTexture from the context that owns its current GL
   // texture. Must be called with that context current on the calling thread.
-  void DetachFromGLContext();
+  virtual void DetachFromGLContext();
 
   // Creates a native render surface for this surface texture.
   // The caller must release the underlying reference when done with the handle
   // by calling ANativeWindow_release().
   ANativeWindow* CreateSurface();
 
   // Release the SurfaceTexture back buffers.  The SurfaceTexture is no longer
   // usable after calling this.  Note that this is not called 'Release', like
   // the android API, because scoped_refptr<> calls that quite a bit.
   void ReleaseSurfaceTexture();
 
   // Set the default buffer size for the surface texture.
   void SetDefaultBufferSize(int width, int height);
 
   const base::android::JavaRef<jobject>& j_surface_texture() const {
     return j_surface_texture_;
   }
 
  protected:
+  static base::android::ScopedJavaLocalRef<jobject> CreateJavaSurfaceTexture(
+      int texture_id);
+
   explicit SurfaceTexture(
       const base::android::ScopedJavaLocalRef<jobject>& j_surface_texture);
 
+  virtual ~SurfaceTexture();
+
+  // Destroy |j_surface_texture| if it hasn't been destroyed already.
+  void DestroyJavaObject();
+
  private:
   friend class base::RefCountedThreadSafe<SurfaceTexture>;
-  ~SurfaceTexture();
 
   // Java SurfaceTexture instance.
   base::android::ScopedJavaGlobalRef<jobject> j_surface_texture_;
 
   DISALLOW_COPY_AND_ASSIGN(SurfaceTexture);
 };
 
 }  // namespace gl
 
 #endif  // UI_GL_ANDROID_SURFACE_TEXTURE_H_