Switch to doing user-resizing via system for panels on Mac

chrome/browser/ui/cocoa/panels/panel_utils_cocoa.h

Index: chrome/browser/ui/cocoa/panels/panel_utils_cocoa.h
diff --git a/chrome/browser/ui/cocoa/panels/panel_utils_cocoa.h b/chrome/browser/ui/cocoa/panels/panel_utils_cocoa.h
index 2deb2a5a094b1590683bb6d0a4d6117874b5cef6..50dadd93ea75ca0d08cb95da3c8d787905d85c05 100644
--- a/chrome/browser/ui/cocoa/panels/panel_utils_cocoa.h
+++ b/chrome/browser/ui/cocoa/panels/panel_utils_cocoa.h
@@ -17,6 +17,10 @@ namespace cocoa_utils {
 // coordinates (with (0,0) in the low-left corner).
 NSRect ConvertRectToCocoaCoordinates(const gfx::Rect& bounds);
 
+// Converts a rect from the Cocoa screen oordinates (with (0,0) in the low-left
+// corner) to the platfrom-independent screen coordinates.
+gfx::Rect ConvertRectFromCocoaCoordinates(NSRect 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).