wstring: convert all SetPageTitle APIs to use string16

chrome/browser/ui/views/tab_contents/tab_contents_view_views.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_views.h"
 
 #include <vector>
 
 #include "base/time.h"
 #include "chrome/browser/ui/views/sad_tab_view.h"
@@ skipping 94 matching lines @@
   *out = GetClientAreaScreenBounds();
 }
 
 void TabContentsViewViews::StartDragging(const WebDropData& drop_data,
                                          WebDragOperationsMask ops,
                                          const SkBitmap& image,
                                          const gfx::Point& image_offset) {
   native_tab_contents_view_->StartDragging(drop_data, ops, image, image_offset);
 }
 
-void TabContentsViewViews::SetPageTitle(const std::wstring& title) {
+void TabContentsViewViews::SetPageTitle(const string16& title) {
   native_tab_contents_view_->SetPageTitle(title);
 }
 
 void TabContentsViewViews::OnTabCrashed(base::TerminationStatus status,
                                         int /* error_code */) {
   // Force an invalidation to render sad tab.
   // Note that it's possible to get this message after the window was destroyed.
   if (GetNativeView()) {
     SadTabView::Kind kind =
         status == base::TERMINATION_STATUS_PROCESS_WAS_KILLED ?
@@ skipping 278 matching lines @@
     focus_manager_ = NULL;
     return focus_manager;
   }
   // TODO(jcampan): we should DCHECK on focus_manager_, as it should not be
   // NULL.  We are not doing it as it breaks some unit-tests.  We should
   // probably have an empty TabContentView implementation for the unit-tests,
   // that would prevent that code being executed in the unit-test case.
   // DCHECK(focus_manager_);
   return focus_manager_;
 }