Move code in ui/gl/* from gfx:: to gl::

ui/gl/gl_wgl_api_implementation.cc

Index: ui/gl/gl_wgl_api_implementation.cc
diff --git a/ui/gl/gl_wgl_api_implementation.cc b/ui/gl/gl_wgl_api_implementation.cc
index d3957e3407a4041070a0ab5eb3b8a96039aa0820..842b638a03ad3a91f618759b4a8da49d9f5abbde 100644
--- a/ui/gl/gl_wgl_api_implementation.cc
+++ b/ui/gl/gl_wgl_api_implementation.cc
@@ -9,7 +9,7 @@
 #include "base/strings/string_util.h"
 #include "ui/gl/gl_implementation.h"
 
-namespace gfx {
+namespace gl {
 
 RealWGLApi* g_real_wgl;
 
@@ -122,6 +122,4 @@ bool GetGLWindowSystemBindingInfoWGL(GLWindowSystemBindingInfo* info) {
   return true;
 }
 
-}  // namespace gfx
-
-
+}  // namespace gl