Revert of ui: Move GLImage::BindTexImage fallback from GLImage implementations to GLES2CmdDecoder.

ui/gl/gl_image.h

Index: ui/gl/gl_image.h
diff --git a/ui/gl/gl_image.h b/ui/gl/gl_image.h
index aba2651ee9d476b940ddd68ec92ea350cd5b5329..a23669952a80b8de92eb1a508f9a3124ff2901e1 100644
--- a/ui/gl/gl_image.h
+++ b/ui/gl/gl_image.h
@@ -4,8 +4,6 @@
 
 #ifndef UI_GL_GL_IMAGE_H_
 #define UI_GL_GL_IMAGE_H_
-
-#include <string>
 
 #include "base/memory/ref_counted.h"
 #include "ui/gfx/geometry/point.h"
@@ -24,8 +22,8 @@
 
 namespace gfx {
 
-// Encapsulates an image that can be bound and/or copied to a texture, hiding
-// platform specific management.
+// Encapsulates an image that can be bound to a texture, hiding platform
+// specific management.
 class GL_EXPORT GLImage : public base::RefCounted<GLImage> {
  public:
   GLImage() {}
@@ -34,32 +32,36 @@
   virtual void Destroy(bool have_context) = 0;
 
   // Get the size of the image.
-  virtual Size GetSize() = 0;
+  virtual gfx::Size GetSize() = 0;
 
   // Get the internal format of the image.
   virtual unsigned GetInternalFormat() = 0;
 
-  // Bind image to texture currently bound to |target|. Returns true on success.
-  // It is valid for an implementation to always return false.
+  // Bind image to texture currently bound to |target|.
   virtual bool BindTexImage(unsigned target) = 0;
 
   // Release image from texture currently bound to |target|.
   virtual void ReleaseTexImage(unsigned target) = 0;
 
-  // Define texture currently bound to |target| by copying image into it.
-  // Returns true on success. It is valid for an implementation to always
-  // return false.
-  virtual bool CopyTexImage(unsigned target) = 0;
-
   // Copy |rect| of image to |offset| in texture currently bound to |target|.
-  // Returns true on success. It is valid for an implementation to always
-  // return false.
   virtual bool CopyTexSubImage(unsigned target,
                                const Point& offset,
                                const Rect& rect) = 0;
 
+  // Called before the texture is used for drawing.
+  virtual void WillUseTexImage() = 0;
+
+  // Called after the texture has been used for drawing.
+  virtual void DidUseTexImage() = 0;
+
+  // Called before the texture image data will be modified.
+  virtual void WillModifyTexImage() = 0;
+
+  // Called after the texture image data has been modified.
+  virtual void DidModifyTexImage() = 0;
+
   // Schedule image as an overlay plane to be shown at swap time for |widget|.
-  virtual bool ScheduleOverlayPlane(AcceleratedWidget widget,
+  virtual bool ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
                                     int z_order,
                                     OverlayTransform transform,
                                     const Rect& bounds_rect,