Reland Change minimum length of Aura overlay scrollbars.

third_party/WebKit/Source/platform/scroll/ScrollbarThemeOverlay.cpp

 /*
  * Copyright (C) 2011 Google 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
@@ skipping 252 matching lines @@
   DCHECK(usesNinePatchThumbResource());
 
   WebThemeEngine::Part part = WebThemeEngine::PartScrollbarHorizontalThumb;
   if (scrollbar.orientation() == VerticalScrollbar)
     part = WebThemeEngine::PartScrollbarVerticalThumb;
 
   DCHECK(Platform::current()->themeEngine());
   return Platform::current()->themeEngine()->ninePatchAperture(part);
 }
 
+int ScrollbarThemeOverlay::minimumThumbLength(
+    const ScrollbarThemeClient& scrollbar) {
+  if (scrollbar.orientation() == VerticalScrollbar) {
+    IntSize size = Platform::current()->themeEngine()->getSize(

[Evan Stade, 2017/03/23 23:16:24]

nit: return
Platform::current()->themeEngine()->getSize(WebThemeEngine::PartScrollbarVerticalThumb).height()?

[bokan, 2017/03/24 20:30:27]

Done (in ScrollbarThemeAura too).

+        WebThemeEngine::PartScrollbarVerticalThumb);
+    return size.height();
+  }
+
+  IntSize size = Platform::current()->themeEngine()->getSize(
+      WebThemeEngine::PartScrollbarHorizontalThumb);
+  return size.width();

[Evan Stade, 2017/03/23 23:16:24]

ditto

[bokan, 2017/03/24 20:30:27]

Done.

+}
+
 }  // namespace blink