Support subpixel layout for borders.

third_party/WebKit/Source/core/layout/LayoutScrollbarPart.cpp

Index: third_party/WebKit/Source/core/layout/LayoutScrollbarPart.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutScrollbarPart.cpp b/third_party/WebKit/Source/core/layout/LayoutScrollbarPart.cpp
index 3de0ff854f35e65f48f413bf3d0d4669c0ce3436..8b81a306c672c91e12f93875cb3cfa937d14f084 100644
--- a/third_party/WebKit/Source/core/layout/LayoutScrollbarPart.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutScrollbarPart.cpp
@@ -140,10 +140,9 @@ void LayoutScrollbarPart::computeScrollbarWidth() {
   // FIXME: Querying the style's border information doesn't work on table cells
   // with collapsing borders.
   int visibleSize =
-      (m_scrollbar->owningLayoutObject()->size().width() -
-       m_scrollbar->owningLayoutObject()->style()->borderLeftWidth() -
-       m_scrollbar->owningLayoutObject()->style()->borderRightWidth())
-          .toInt();
+      m_scrollbar->owningLayoutObject()->size().width() -
+      m_scrollbar->owningLayoutObject()->style()->borderLeftWidth() -
+      m_scrollbar->owningLayoutObject()->style()->borderRightWidth();
   int w = calcScrollbarThicknessUsing(MainOrPreferredSize, style()->width(),
                                       visibleSize);
   int minWidth =
@@ -170,10 +169,9 @@ void LayoutScrollbarPart::computeScrollbarHeight() {
   // FIXME: Querying the style's border information doesn't work on table cells
   // with collapsing borders.
   int visibleSize =
-      (m_scrollbar->owningLayoutObject()->size().height() -
-       m_scrollbar->owningLayoutObject()->style()->borderTopWidth() -
-       m_scrollbar->owningLayoutObject()->style()->borderBottomWidth())
-          .toInt();
+      m_scrollbar->owningLayoutObject()->size().height() -
+      m_scrollbar->owningLayoutObject()->style()->borderTopWidth() -
+      m_scrollbar->owningLayoutObject()->style()->borderBottomWidth();
   int h = calcScrollbarThicknessUsing(MainOrPreferredSize, style()->height(),
                                       visibleSize);
   int minHeight =