Change panel drag related methods to use mouse location in screen coordinates.

chrome/browser/ui/panels/panel_utils_cocoa.h

+// 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 <Cocoa/Cocoa.h>
+#include "ui/gfx/point.h"
+#include "ui/gfx/rect.h"
+
+namespace cocoa_utils {
+
+// TODO(dcheng): Move elsewhere so BrowserWindowCocoa can use them too.
+// Converts a rect from the platfrom-independent screen coordinates (with the
+// (0,0) in the top-left corner of the primary screen) to the Cocoa screen
+// coordinates (with (0,0) in the low-left corner).
+NSRect ConvertRectToCocoaCoordinates(const gfx::Rect& bounds);
+
+// Converts a point from the platfrom-independent screen coordinates (with the
+// (0,0) in the top-left corner of the primary screen) to the Cocoa screen
+// coordinates (with (0,0) in the low-left corner).
+NSPoint ConvertPointToCocoaCoordinates(const gfx::Point& point);
+
+// Converts a point from the Cocoa screen coordinates (with (0,0) in the
+// low-left corner of the primary screen) to the platfrom-independent screen
+// coordinates (with the (0,0) in the top-left corner).
+gfx::Point ConvertPointFromCocoaCoordinates(NSPoint point);
+
+}  // namespace cocoa_utils