gpu: Add YCbCr 420v extension.

ui/gl/scoped_binders.cc

Index: ui/gl/scoped_binders.cc
diff --git a/ui/gl/scoped_binders.cc b/ui/gl/scoped_binders.cc
index bb2b290105622a9823b49b284d6bbd72aa6f36bc..6850504f75e204d4b678cc3d9789ee34377f7566 100644
--- a/ui/gl/scoped_binders.cc
+++ b/ui/gl/scoped_binders.cc
@@ -47,8 +47,11 @@ ScopedTextureBinder::ScopedTextureBinder(unsigned int target, unsigned int id)
       case GL_TEXTURE_EXTERNAL_OES:
         target_getter = GL_TEXTURE_BINDING_EXTERNAL_OES;
         break;
+      case GL_TEXTURE_RECTANGLE_ARB:
+        target_getter = GL_TEXTURE_BINDING_RECTANGLE_ARB;
+        break;
       default:
-        NOTIMPLEMENTED() << "Target not part of OpenGL ES 2.0 spec.";
+        NOTIMPLEMENTED() << " Target not part of OpenGL ES 2.0 spec.";

[reveman, 2015/10/27 19:31:54]

why the space here? also I'm not sure this is accurate anymore. RECTANGLE is not
part of the ES 2.0 spec. we should update the comment so it's not confusing.

[Daniele Castagna, 2015/10/29 20:09:05]

Fixed the string.
The added space is because NOTIMPLEMENTED prints out "NOT IMPLEMENTED" and
concatenating a string without spaces ended up printing
"[...]IMPLEMENTEDTarget[...]"

     }
     glGetIntegerv(target_getter, &old_id_);
   }