Split StyleSurroundData::padding into four individual Lengths.

third_party/WebKit/Source/platform/mac/ThemeMac.mm

 /*
  * Copyright (C) 2008, 2010, 2011, 2012 Apple Inc. All Rights Reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 449 matching lines @@
       return LengthBox(0, zoomed_box.Right().Value(), 0,
                        zoomed_box.Left().Value());
     default:
       return Theme::ControlBorder(part, font_description, zoomed_box,
                                   zoom_factor);
   }
 }
 
 LengthBox ThemeMac::ControlPadding(ControlPart part,
                                    const FontDescription& font_description,
-                                   const LengthBox& zoomed_box,
+                                   const Length& zoomed_box_top,
+                                   const Length& zoomed_box_right,
+                                   const Length& zoomed_box_bottom,
+                                   const Length& zoomed_box_left,
                                    float zoom_factor) const {
   switch (part) {
     case kPushButtonPart: {
       // Just use 8px.  AppKit wants to use 11px for mini buttons, but that
       // padding is just too large for real-world Web sites (creating a huge
       // necessary minimum width for buttons whose space is by definition
       // constrained, since we select mini only for small cramped environments.
       // This also guarantees the HTML <button> will match our rendering by
       // default, since we're using a consistent padding.
       const int padding = 8 * zoom_factor;
       return LengthBox(2, padding, 3, padding);
     }
     default:
-      return Theme::ControlPadding(part, font_description, zoomed_box,
-                                   zoom_factor);
+      return Theme::ControlPadding(part, font_description, zoomed_box_top,
+                                   zoomed_box_right, zoomed_box_bottom,
+                                   zoomed_box_left, zoom_factor);
   }
 }
 
 void ThemeMac::AddVisualOverflow(ControlPart part,
                                  ControlStates states,
                                  float zoom_factor,
                                  IntRect& zoomed_rect) const {
   BEGIN_BLOCK_OBJC_EXCEPTIONS
   switch (part) {
     case kCheckboxPart: {
@@ skipping 49 matching lines @@
       zoomed_rect =
           InflateRect(zoomed_rect, zoomed_size, kStepperMargin, zoom_factor);
       break;
     }
     default:
       break;
   }
   END_BLOCK_OBJC_EXCEPTIONS
 }
 }