wstring: convert all SetPageTitle APIs to use string16

chrome/browser/ui/views/tab_contents/tab_contents_view_touch.cc

 // Copyright (c) 2011 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/views/tab_contents/tab_contents_view_touch.h"
 
 #include <X11/extensions/XInput2.h>
 #undef Status
 
 #include "base/string_util.h"
@@ skipping 108 matching lines @@
   *out = bounds();
 }
 
 void TabContentsViewTouch::StartDragging(const WebDropData& drop_data,
                                          WebDragOperationsMask ops,
                                          const SkBitmap& image,
                                          const gfx::Point& image_offset) {
   // TODO(anicolao): implement dragging
 }
 
-void TabContentsViewTouch::SetPageTitle(const std::wstring& title) {
+void TabContentsViewTouch::SetPageTitle(const string16& title) {
   // TODO(anicolao): figure out if there's anything useful to do here
 }
 
 void TabContentsViewTouch::OnTabCrashed(base::TerminationStatus status,
                                         int /* error_code */) {
   if (sad_tab_ != NULL)
     return;
 
   sad_tab_.reset(new SadTabView(
       tab_contents_,
@@ skipping 281 matching lines @@
     rwhv->SetSize(size);
 
   if (needs_resize)
     SetFloatingPosition(size);
 }
 
 void TabContentsViewTouch::SetFloatingPosition(const gfx::Size& size) {
   // TODO(anicolao): rework this once we have WebUI views for dialogs
   SetBounds(x(), y(), size.width(), size.height());
 }