Add initial GpuMemoryBufferSurfaceTexture implementation.

ui/gl/gl_image_surface_texture.h

-// Copyright 2013 The Chromium Authors. All rights reserved.
+// 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 UI_GL_GL_IMAGE_SHM_H_
-#define UI_GL_GL_IMAGE_SHM_H_
+#ifndef UI_GL_GL_IMAGE_SURFACE_TEXTURE_H_
+#define UI_GL_GL_IMAGE_SURFACE_TEXTURE_H_
 
-#include "base/memory/scoped_ptr.h"
+#include "base/memory/ref_counted.h"
 #include "ui/gl/gl_bindings.h"
 #include "ui/gl/gl_image.h"
 
 namespace gfx {
 
-class GL_EXPORT GLImageShm : public GLImage {
+class SurfaceTexture;
+
+class GL_EXPORT GLImageSurfaceTexture : public GLImage {
  public:
-  GLImageShm(gfx::Size size, unsigned internalformat);
+  explicit GLImageSurfaceTexture(gfx::Size size);
 
   bool Initialize(gfx::GpuMemoryBufferHandle buffer);
 
   // Overridden from GLImage:
   virtual void Destroy() OVERRIDE;
   virtual gfx::Size GetSize() OVERRIDE;
   virtual bool BindTexImage(unsigned target) OVERRIDE;
   virtual void ReleaseTexImage(unsigned target) OVERRIDE {}
   virtual void WillUseTexImage() OVERRIDE {}
   virtual void DidUseTexImage() OVERRIDE {}
   virtual void WillModifyTexImage() OVERRIDE {}
   virtual void DidModifyTexImage() OVERRIDE {}
 
  protected:
-  virtual ~GLImageShm();
+  virtual ~GLImageSurfaceTexture();
 
  private:
-  scoped_ptr<base::SharedMemory> shared_memory_;
+  scoped_refptr<SurfaceTexture> surface_texture_;
   gfx::Size size_;
-  unsigned internalformat_;
-#if defined(OS_WIN) || defined(USE_X11) || defined(OS_ANDROID) || \
-    defined(USE_OZONE)
-  GLuint egl_texture_id_;
-  EGLImageKHR egl_image_;
-#endif
+  GLint texture_id_;
 
-  DISALLOW_COPY_AND_ASSIGN(GLImageShm);
+  DISALLOW_COPY_AND_ASSIGN(GLImageSurfaceTexture);
 };
 
 }  // namespace gfx
 
-#endif  // UI_GL_GL_IMAGE_SHM_H_
+#endif  // UI_GL_GL_IMAGE_SURFACE_TEXTURE_H_