Revert of Apply the Surface Texture transformation matrix during texture copy....

Revert of Apply the Surface Texture transformation matrix during texture copy. (patchset #7 id:140001 of https://codereview.chromium.org/1536713002/ )

Reason for revert:
The CL was/is the main suspect for causing crbug.com/574811.

Original issue's description:
> Apply the Surface Texture transformation matrix during texture copy.
>
> Android Surface Textures have an associated UV transform matrix that can
> potentially vary from frame to frame. If the texture is copied, it is
> useful for the copy to have a consistent orientation, rather than having
> to propagate the UV transformation matrix with the copy as well.
>
> Because the Surface Texture is meant to be used with (0,0) meaning
> the bottom left of the texture, the result of this operation from the
> perspective of Chromium is a y-flipped texture.
>
> BUG=226218
>
> Committed: https://crrev.com/907d1b74f2f3b50d77577c8d83c0cd2472400b3f
> Cr-Commit-Position: refs/heads/master@{#367714}

TBR=reveman@chromium.org,sievers@chromium.org,kbr@chromium.org,ccameron@chromium.org,tobiasjs@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=226218

Review URL: https://codereview.chromium.org/1569543002

Cr-Commit-Position: refs/heads/master@{#367844}

content/common/gpu/stream_texture_android.h

@@ -14,10 +14,6 @@
 #include "ui/gl/android/surface_texture.h"
 #include "ui/gl/gl_image.h"
 
-namespace ui {
-class ScopedMakeCurrent;
-}
-
 namespace gfx {
 class Size;
 }
@@ -60,10 +56,6 @@ class StreamTexture : public gl::GLImage,
   // GpuCommandBufferStub::DestructionObserver implementation.
   void OnWillDestroyStub() override;
 
-  scoped_ptr<ui::ScopedMakeCurrent> MakeStubCurrent();
-
-  void UpdateTexImage();
-
   // Called when a new frame is available for the SurfaceTexture.
   void OnFrameAvailable();
 
@@ -94,13 +86,6 @@ class StreamTexture : public gl::GLImage,
   bool has_listener_;
   uint32_t texture_id_;
 
-  unsigned framebuffer_;
-  unsigned vertex_shader_;
-  unsigned fragment_shader_;
-  unsigned program_;
-  unsigned vertex_buffer_;
-  int u_xform_location_;
-
   base::WeakPtrFactory<StreamTexture> weak_factory_;
   DISALLOW_COPY_AND_ASSIGN(StreamTexture);
 };