Remove some pass-thrus on RootWindow API in favor of exposing the RootWindowHost again.

chrome/browser/ui/find_bar/find_bar_host_browsertest.cc

 // Copyright (c) 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 "base/file_util.h"
 #include "base/message_loop/message_loop.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/string16.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 1626 matching lines @@
   content::TitleWatcher title_watcher(tab, expected_title);
 
   GURL url = ui_test_utils::GetTestUrl(
       base::FilePath().AppendASCII("printing"),
       base::FilePath().AppendASCII("npapi_plugin.html"));
   ui_test_utils::NavigateToURL(browser(), url);
 
   EXPECT_EQ(expected_title, title_watcher.WaitAndGetTitle());
 
   // Now get the region of the plugin before the find bar is shown.
-  HWND hwnd =
-      tab->GetView()->GetNativeView()->GetDispatcher()->GetAcceleratedWidget();
+  HWND hwnd = tab->GetView()->GetNativeView()->GetDispatcher()->host()->
+      GetAcceleratedWidget();
   HWND child = NULL;
   EnumChildWindows(hwnd, EnumerateChildren,reinterpret_cast<LPARAM>(&child));
 
   RECT region_before, region_after;
   int result = GetWindowRgnBox(child, &region_before);
   ASSERT_EQ(result, SIMPLEREGION);
 
   // Create a new tab and open the find bar there.
   chrome::NewTab(browser());
   browser()->tab_strip_model()->ActivateTabAt(1, true);
@@ skipping 19 matching lines @@
   ASSERT_EQ(result, SIMPLEREGION);
   bool rects_equal =
       region_before.left == region_after.left &&
       region_before.top == region_after.top &&
       region_before.right == region_after.right &&
       region_before.bottom == region_after.bottom;
   ASSERT_FALSE(rects_equal);
 }
 
 #endif