Update uses of UTF conversions in content/ to use the base:: namespace.

content/browser/renderer_host/gtk_im_context_wrapper.cc

 // Copyright (c) 2012 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 "content/browser/renderer_host/gtk_im_context_wrapper.h"
 
 #include <gdk/gdk.h>
 #include <gdk/gdkkeysyms.h>
 #include <gtk/gtk.h>
 
@@ skipping 605 matching lines @@
     blink::WebInputEvent::Type type) {
   NativeWebKeyboardEvent fake_event;
   fake_event.windowsKeyCode = kCompositionEventKeyCode;
   fake_event.skip_in_browser = true;
   fake_event.type = type;
   host_view_->ForwardKeyboardEvent(fake_event);
 }
 
 void GtkIMContextWrapper::HandleCommitThunk(
     GtkIMContext* context, gchar* text, GtkIMContextWrapper* self) {
-  self->HandleCommit(UTF8ToUTF16(text));
+  self->HandleCommit(base::UTF8ToUTF16(text));
 }
 
 void GtkIMContextWrapper::HandlePreeditStartThunk(
     GtkIMContext* context, GtkIMContextWrapper* self) {
   self->HandlePreeditStart();
 }
 
 void GtkIMContextWrapper::HandlePreeditChangedThunk(
     GtkIMContext* context, GtkIMContextWrapper* self) {
   gchar* text = NULL;
@@ skipping 19 matching lines @@
     GtkWidget* widget, GtkIMContextWrapper* self) {
   self->HandleHostViewRealize(widget);
 }
 
 void GtkIMContextWrapper::HandleHostViewUnrealizeThunk(
     GtkWidget* widget, GtkIMContextWrapper* self) {
   self->HandleHostViewUnrealize();
 }
 
 }  // namespace content