Revert 132934 - this change seems to break many webgl related layout tests

gpu/GLES2/extensions/CHROMIUM/CHROMIUM_copy_texture.txt

Index: gpu/GLES2/extensions/CHROMIUM/CHROMIUM_copy_texture.txt
===================================================================
--- gpu/GLES2/extensions/CHROMIUM/CHROMIUM_copy_texture.txt	(revision 132957)
+++ gpu/GLES2/extensions/CHROMIUM/CHROMIUM_copy_texture.txt	(working copy)
@@ -1,66 +0,0 @@
-Name
-
-    CHROMIUM_copy_texture
-
-Name Strings
-
-    GL_CHROMIUM_copy_texture
-
-Version
-
-    Last Modifed Date: April 3, 2012
-
-Dependencies
-
-    OpenGL ES 2.0 is required.
-
-    CHROMIUM_flipy affects the definition of this extension.
-    EXT_texture_format_BGRA8888 affects the definition of this extension.
-
-Overview
-
-    This extension expands on the functionality provided by the
-    glCopyTexImage2D command.  A new function is exported,
-    glCopyTextureCHROMIUM, that performs the same copy operation as
-    glCopyTexImage2D, while respecting the pixel-storage modifiers
-    UNPACK_FLIP_Y_CHROMIUM and GL_UNPACK_PREMULTIPLY_ALPHA_CHROMIUM.
-
-    The extension also supports copying BGRA textures, which is not explicitly
-    granted by EXT_texture_format_BGRA8888.
-
-New Procedures and Functions
-
-    void glCopyTextureCHROMIUM (GLenum target, GLenum source_id,
-                                GLenum dest_id, GLint level)
-
-    Copies the contents of texture referred to by <source_id> to texture
-    <dest_id>.
-
-    Texture level 0 is copied from the source image to level <level> of the
-    destination texture.
-
-    <target> uses the same parameters as TexImage2D.
-
-    INVALID_VALUE is generated if <target> is not GL_TEXTURE_2D.
-
-    INVALID_VALUE is generated if <source_id> or <dest_id> are not valid texture
-    objects.
-
-    INVALID_VALUE is generated if <level> is not a valid level of the
-    destination texture, or if level 0 of the source texture is not defined.
-
-Errors
-
-    None.
-
-New Tokens
-
-    None.
-
-New State
-
-    None.
-
-Revision History
-
-    8/1/2011    Documented the extension