[Mac]Port browser_keyevents_browsertest.cc and browser_focus_uitest.cc to Mac.

chrome/test/ui_test_utils_mac.cc

-// Copyright (c) 2009 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/test/ui_test_utils.h"
-
-#include "base/logging.h"
-
-namespace ui_test_utils {
-
-// Details on why these are unimplemented: ViewIDs are defined in
-// chrome/browser/view_ids.h.  For Cocoa (unlike Views GTK) we don't
-// associate ViewIDs with NSViews.
-//
-// Here's an idea on how to implement.
-// - associate the correct ViewID with an NSView on construction (the most work)
-// - create a mapping table, such as chrome/browser/gtk/view_id_util.h
-// - IsViewFocused() then becomes
-//    [browser->window()->GetNativeHandle() firstResponder]
-// - ClickOnView() becomes a normal NSMouseDown event forge at the right coords
-
-bool IsViewFocused(const Browser* browser, ViewID vid) {
-  NOTIMPLEMENTED();
-  return false;
-}
-
-void ClickOnView(const Browser* browser, ViewID vid) {
-  NOTIMPLEMENTED();
-}
-
-}  // namespace ui_test_utils