Cleanup: Convert ASCIIToUTF16("") to string16().

chrome/browser/ui/find_bar/find_bar_host_browsertest.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 "base/message_loop.h"
+#include "base/string16.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_navigator.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/find_bar/find_bar.h"
 #include "chrome/browser/ui/find_bar/find_bar_controller.h"
 #include "chrome/browser/ui/find_bar/find_notification_details.h"
@@ skipping 934 matching lines @@
   TabContentsWrapper* tab2 = browser()->GetSelectedTabContentsWrapper();
   EXPECT_NE(tab1, tab2);
 
   // Open the Find box.
   EnsureFindBoxOpen();
 
   // The new tab should have "page" prepopulated, since that was the last search
   // in the first tab.
   EXPECT_EQ(ASCIIToUTF16("page"), GetFindBarText());
   // But it should not seem like a search has been issued.
-  EXPECT_EQ(ASCIIToUTF16(""), GetMatchCountText());
+  EXPECT_EQ(string16(), GetMatchCountText());
 }
 
 // This makes sure that we can search for A in tabA, then for B in tabB and
 // when we come back to tabA we should still see A (because that was the last
 // search in that tab).
 IN_PROC_BROWSER_TEST_F(FindInPageControllerTest, PrepopulatePreserveLast) {
 #if defined(OS_MACOSX)
   // FindInPage on Mac doesn't use prepopulated values. Search there is global.
   return;
 #endif
@@ skipping 164 matching lines @@
   MessageLoop::current()->RunAllPending();
 
   EnsureFindBoxOpenForBrowser(popup);
 
   // GTK adjusts FindBar size asynchronously.
   MessageLoop::current()->RunAllPending();
 
   ASSERT_LE(GetFindBarWidthForBrowser(popup),
             popup->window()->GetBounds().width());
 }