Prepare ui/ module for compilation with OS X 10.7 deployment target.

ui/views/controls/menu/menu_runner_impl_cocoa.mm

 // Copyright 2014 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.
 
 #import "ui/views/controls/menu/menu_runner_impl_cocoa.h"
 
 #import "ui/base/cocoa/menu_controller.h"
 #include "ui/base/models/menu_model.h"
 #include "ui/events/event_utils.h"
 #include "ui/gfx/geometry/rect.h"
@@ skipping 23 matching lines @@
 
 // Places a temporary, hidden NSView at |screen_bounds| within |window|. Used
 // with -[NSMenu popUpMenuPositioningItem:atLocation:inView:] to position the
 // menu for a combobox. The caller must remove the returned NSView from its
 // superview when the menu is closed.
 base::scoped_nsobject<NSView> CreateMenuAnchorView(
     NSWindow* window,
     const gfx::Rect& screen_bounds,
     NSMenuItem* checked_item) {
   NSRect rect = gfx::ScreenRectToNSRect(screen_bounds);
-  rect.origin = [window convertScreenToBase:rect.origin];
+  rect.origin = [window convertRectFromScreen:rect].origin;

[Avi (use Gerrit), 2016/03/08 20:07:54]

Do

rect = [window convertRectFromScreen:rect];

Again, we were compensating for the lack of rect conversion by only converting
the origin. Now that we have full rect conversion, can we let the conversion do
its thing?

[erikchen, 2016/03/08 20:57:41]

Done.

   rect = [[window contentView] convertRect:rect fromView:nil];
 
   // If there's no checked item (e.g. Combobox::STYLE_ACTION), NSMenu will
   // anchor at the top left of the frame. Action buttons should anchor below.
   if (!checked_item) {
     rect.size.height = 0;
     if (base::i18n::IsRTL())
       rect.origin.x += rect.size.width;
   } else {
     // To ensure a consistent anchoring that's vertically centered in the
@@ skipping 102 matching lines @@
 
 base::TimeDelta MenuRunnerImplCocoa::GetClosingEventTime() const {
   return closing_event_time_;
 }
 
 MenuRunnerImplCocoa::~MenuRunnerImplCocoa() {
 }
 
 }  // namespace internal
 }  // namespace views