gpu: glCopyTextureCHROMIUM() checks dest internal format incorrectly.

gpu/GLES2/extensions/CHROMIUM/CHROMIUM_copy_texture.txt

Index: gpu/GLES2/extensions/CHROMIUM/CHROMIUM_copy_texture.txt
diff --git a/gpu/GLES2/extensions/CHROMIUM/CHROMIUM_copy_texture.txt b/gpu/GLES2/extensions/CHROMIUM/CHROMIUM_copy_texture.txt
index fdaa7d64b7b139fe757931769bf16d006460a579..ad9ca689ca90303ffa3c9342e3d70894ef7a5719 100644
--- a/gpu/GLES2/extensions/CHROMIUM/CHROMIUM_copy_texture.txt
+++ b/gpu/GLES2/extensions/CHROMIUM/CHROMIUM_copy_texture.txt
@@ -48,7 +48,10 @@ New Procedures and Functions
 
     The internal format of the destination texture is converted to that
     specified by <internal_format>. Must be one of the following symbolic
-    constants: GL_ALPHA, GL_LUMINANCE, GL_LUMINANCE_ALPHA, GL_RGB, GL_RGBA
+    constants: GL_RGB, GL_RGBA
+    The internal format of <source_id> texture must be one of the following
+    symbolic constants: GL_ALPHA, GL_LUMINANCE, GL_LUMINANCE_ALPHA, GL_RGB,
+    GL_RGBA, GL_BGRA_EXT
     When <source_id> texture doens't contain a superset of the component
     required by <internal_format>, fill the components by following rules.
 
@@ -59,12 +62,19 @@ New Procedures and Functions
                    GL_LUMINANCE_ALPHA     (L, L, L, A)
                    GL_RGB                 (R, G, B, 1)
                    GL_RGBA                (R, G, B, A)
+                   GL_BGRA_EXT            (R, G, B, A)
 
     The format type of the destination texture is converted to that specified
     by <dest_type>.
 
     <target> uses the same parameters as TexImage2D.
 
+    INVALID_OPERATION is generated if <internal_format> is not one of the valid formats
+    described above.
+
+    INVALID_OPERATION is generated if the internal format of <source_id> is not one of
+    formats from the table above.
+
     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