Replace string16 with base::string16.

chrome/browser/chromeos/input_method/textinput_test_helper.cc

 // Copyright (c) 2013 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 "ash/shell.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/chromeos/input_method/textinput_test_helper.h"
 #include "chrome/browser/ui/browser.h"
@@ skipping 127 matching lines @@
     const gfx::Rect& expected_caret_rect,
     const gfx::Rect& expected_composition_head) {
   waiting_type_ = WAIT_ON_CARET_BOUNDS_CHANGED;
   while (expected_caret_rect != caret_rect_ ||
          expected_composition_head != composition_head_)
     content::RunMessageLoop();
   waiting_type_ = NO_WAIT;
 }
 
 void TextInputTestHelper::WaitForSurroundingTextChanged(
-    const string16& expected_text,
+    const base::string16& expected_text,
     const gfx::Range& expected_selection) {
   waiting_type_ = WAIT_ON_CARET_BOUNDS_CHANGED;
   while (expected_text != surrounding_text_ ||
          expected_selection != selection_range_)
     content::RunMessageLoop();
   waiting_type_ = NO_WAIT;
 }
 
 // static
 bool TextInputTestHelper::ConvertRectFromString(const std::string& str,
@@ skipping 35 matching lines @@
   mouse_event.y = rect.CenterPoint().y();
   mouse_event.clickCount = 1;
   tab->GetRenderViewHost()->ForwardMouseEvent(mouse_event);
 
   mouse_event.type = blink::WebInputEvent::MouseUp;
   tab->GetRenderViewHost()->ForwardMouseEvent(mouse_event);
   return true;
 }
 
 } // namespace chromeos