Update some uses of UTF conversions in chrome/browser to use the base:: namespace.

chrome/browser/ui/browser_commands.cc

 // Copyright 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 "chrome/browser/ui/browser_commands.h"
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 793 matching lines @@
   print_view_manager->PrintToDestination();
 #endif
 }
 
 void EmailPageLocation(Browser* browser) {
   content::RecordAction(UserMetricsAction("EmailPageLocation"));
   WebContents* wc = browser->tab_strip_model()->GetActiveWebContents();
   DCHECK(wc);
 
   std::string title = net::EscapeQueryParamValue(
-      UTF16ToUTF8(wc->GetTitle()), false);
+      base::UTF16ToUTF8(wc->GetTitle()), false);
   std::string page_url = net::EscapeQueryParamValue(wc->GetURL().spec(), false);
   std::string mailto = std::string("mailto:?subject=Fwd:%20") +
       title + "&body=%0A%0A" + page_url;
   platform_util::OpenExternal(browser->profile(), GURL(mailto));
 }
 
 bool CanEmailPageLocation(const Browser* browser) {
   return browser->toolbar_model()->ShouldDisplayURL() &&
       browser->tab_strip_model()->GetActiveWebContents()->GetURL().is_valid();
 }
@@ skipping 338 matching lines @@
           Browser::TYPE_POPUP, app_name, gfx::Rect(), browser->profile(),
           browser->host_desktop_type()));
   app_browser->tab_strip_model()->AppendWebContents(contents, true);
 
   contents->GetMutableRendererPrefs()->can_accept_load_drops = false;
   contents->GetRenderViewHost()->SyncRendererPrefs();
   app_browser->window()->Show();
 }
 
 }  // namespace chrome