Replace manual y coordinate flipping with gfx::ScreenRectFromNSRect().

content/browser/web_contents/web_contents_view_mac.mm

 // 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.
 
 #import <Carbon/Carbon.h>
 
 #import "content/browser/web_contents/web_contents_view_mac.h"
 
 #include <string>
 
@@ skipping 14 matching lines @@
 #include "content/public/browser/web_contents_delegate.h"
 #include "content/public/browser/web_contents_view_delegate.h"
 #include "content/public/common/content_switches.h"
 #include "skia/ext/skia_utils_mac.h"
 #import "third_party/mozilla/NSPasteboard+Utils.h"
 #include "ui/base/clipboard/custom_data_helper.h"
 #import "ui/base/cocoa/focus_tracker.h"
 #include "ui/base/dragdrop/cocoa_dnd_util.h"
 #include "ui/display/screen.h"
 #include "ui/gfx/image/image_skia_util_mac.h"
+#include "ui/gfx/mac/coordinate_conversion.h"
 
 using blink::WebDragOperation;
 using blink::WebDragOperationsMask;
 using content::DropData;
 using content::PopupMenuHelper;
 using content::RenderViewHostFactory;
 using content::RenderWidgetHostView;
 using content::RenderWidgetHostViewMac;
 using content::ScreenInfo;
 using content::WebContents;
@@ skipping 111 matching lines @@
   NSWindow* window = [cocoa_view_.get() window];
   NSRect bounds = [cocoa_view_.get() bounds];
   if (window)  {
     // Convert bounds to window coordinate space.
     bounds = [cocoa_view_.get() convertRect:bounds toView:nil];
 
     // Convert bounds to screen coordinate space.
     bounds = [window convertRectToScreen:bounds];
   }
 
-  // Flip y to account for screen flip.
-  NSScreen* screen = [[NSScreen screens] firstObject];
-  bounds.origin.y = [screen frame].size.height - bounds.origin.y
-      - bounds.size.height;
-  *out = gfx::Rect(NSRectToCGRect(bounds));
+  *out = gfx::ScreenRectFromNSRect(bounds);
 }
 
 void WebContentsViewMac::StartDragging(
     const DropData& drop_data,
     WebDragOperationsMask allowed_operations,
     const gfx::ImageSkia& image,
     const gfx::Vector2d& image_offset,
     const DragEventSourceInfo& event_info,
     RenderWidgetHostImpl* source_rwh) {
   // By allowing nested tasks, the code below also allows Close(),
@@ skipping 543 matching lines @@
 
 - (void)viewDidHide {
   [self updateWebContentsVisibility];
 }
 
 - (void)viewDidUnhide {
   [self updateWebContentsVisibility];
 }
 
 @end