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

gpu/command_buffer/service/texture_manager.h

Index: gpu/command_buffer/service/texture_manager.h
diff --git a/gpu/command_buffer/service/texture_manager.h b/gpu/command_buffer/service/texture_manager.h
index 33cd54ad225b682f962f69e169f49e67c94cef86..a04cfa2a1f80315b209d05479f60b831d6402c82 100644
--- a/gpu/command_buffer/service/texture_manager.h
+++ b/gpu/command_buffer/service/texture_manager.h
@@ -39,22 +39,6 @@
 // jointly owned by possibly multiple TextureRef.
 class GPU_EXPORT Texture {
  public:
-  enum ImageState {
-    // If an image is associated with the texture and image state is UNBOUND,
-    // then sampling out of the texture or using it as a target for drawing
-    // will not read/write from/to the image.
-    UNBOUND,
-    // If image state is BOUND, then sampling from the texture will return the
-    // contents of the image and using it as a target will modify the image.
-    BOUND,
-    // Image state is set to COPIED if the contents of the image has been
-    // copied to the texture. Sampling from the texture will be equivalent
-    // to sampling out the image (assuming image has not been changed since
-    // it was copied). Using the texture as a target for drawing will only
-    // modify the texture and not the image.
-    COPIED
-  };
-
   explicit Texture(GLuint service_id);
 
   GLenum min_filter() const {
@@ -149,17 +133,8 @@
   bool GetLevelType(
       GLint target, GLint level, GLenum* type, GLenum* internal_format) const;
 
-  // Set the image for a particular level.
-  void SetLevelImage(GLenum target,
-                     GLint level,
-                     gfx::GLImage* image,
-                     ImageState state);
-
-  // Get the image associated with a particular level. Returns NULL if level
+  // Get the image bound to a particular level. Returns NULL if level
   // does not exist.
-  gfx::GLImage* GetLevelImage(GLint target,
-                              GLint level,
-                              ImageState* state) const;
   gfx::GLImage* GetLevelImage(GLint target, GLint level) const;
 
   bool HasImages() const {
@@ -218,6 +193,9 @@
   // Initialize TEXTURE_MAX_ANISOTROPY to 1 if we haven't done so yet.
   void InitTextureMaxAnisotropyIfNeeded(GLenum target);
 
+  void OnWillModifyPixels();
+  void OnDidModifyPixels();
+
   void DumpLevelMemory(base::trace_event::ProcessMemoryDump* pmd,
                        uint64_t client_tracing_id,
                        const std::string& dump_name) const;
@@ -264,7 +242,6 @@
     GLenum format;
     GLenum type;
     scoped_refptr<gfx::GLImage> image;
-    ImageState image_state;
     uint32 estimated_size;
   };
 
@@ -384,6 +361,13 @@
 
   // Update info about this texture.
   void Update(const FeatureInfo* feature_info);
+
+  // Set the image for a particular level.
+  void SetLevelImage(
+      const FeatureInfo* feature_info,
+      GLenum target,
+      GLint level,
+      gfx::GLImage* image);
 
   // Appends a signature for the given level.
   void AddToSignature(
@@ -806,11 +790,11 @@
     return memory_type_tracker_->GetMemRepresented();
   }
 
-  void SetLevelImage(TextureRef* ref,
-                     GLenum target,
-                     GLint level,
-                     gfx::GLImage* image,
-                     Texture::ImageState state);
+  void SetLevelImage(
+      TextureRef* ref,
+      GLenum target,
+      GLint level,
+      gfx::GLImage* image);
 
   size_t GetSignatureSize() const;