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

ui/gl/gl_enums.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <sstream>
 #include <GLES2/gl2.h>
 
 #include "ui/gl/gl_enums.h"
 
-namespace gfx {
+namespace gl {
 
 std::string GLEnums::GetStringEnum(uint32_t value) {
   const EnumToString* entry = enum_to_string_table_;
   const EnumToString* end = entry + enum_to_string_table_len_;
   for (;entry < end; ++entry) {
     if (value == entry->value) {
       return entry->name;
     }
   }
   std::stringstream ss;
   ss.fill('0');
   ss.width(value < 0x10000 ? 4 : 8);
   ss << std::hex << value;
   return "0x" + ss.str();
 }
 
 std::string GLEnums::GetStringError(uint32_t value) {
   if (value == GL_NONE)
     return "GL_NONE";
   return GetStringEnum(value);
 }
 
 std::string GLEnums::GetStringBool(uint32_t value) {
   return value ? "GL_TRUE" : "GL_FALSE";
 }
 
 #include "ui/gl/gl_enums_implementation_autogen.h"
 
-}  // namespace gfx
-
+}  // namespace gl