ui: Use single buffer SurfaceTexture mode for native GpuMemoryBuffers on Android.

ui/gl/gl_image_surface_texture.h

Index: ui/gl/gl_image_surface_texture.h
diff --git a/ui/gl/gl_image_surface_texture.h b/ui/gl/gl_image_surface_texture.h
index 808f85b7d5dccb4b8a6df27a2a886abad1b644d4..9bbde27162af9e1bcf2e848b526e82dac18e9115 100644
--- a/ui/gl/gl_image_surface_texture.h
+++ b/ui/gl/gl_image_surface_texture.h
@@ -7,7 +7,6 @@
 
 #include "base/memory/ref_counted.h"
 #include "base/threading/thread_checker.h"
-#include "ui/gl/gl_bindings.h"
 #include "ui/gl/gl_image.h"
 
 namespace gfx {
@@ -47,8 +46,12 @@ class GL_EXPORT GLImageSurfaceTexture : public GLImage {
  private:
   scoped_refptr<gfx::SurfaceTexture> surface_texture_;
   const gfx::Size size_;
-  GLint texture_id_;
   base::ThreadChecker thread_checker_;
+  unsigned framebuffer_ = 0;

[Daniele Castagna, 2015/11/03 19:57:34]

Should we try to share this state before this CL? In this was we should also be
able to avoid some code duplication.

[reveman, 2015/12/05 23:09:08]

Long term that would be nice but there are some open questions about how to best
do that so I'd rather not have this important cleanup blocked on that.

+  unsigned vertex_shader_ = 0;
+  unsigned fragment_shader_ = 0;
+  unsigned program_ = 0;
+  unsigned vertex_buffer_ = 0;
 
   DISALLOW_COPY_AND_ASSIGN(GLImageSurfaceTexture);
 };