Support subpixel layout for borders.

third_party/WebKit/Source/core/style/ComputedStyle.h

Index: third_party/WebKit/Source/core/style/ComputedStyle.h
diff --git a/third_party/WebKit/Source/core/style/ComputedStyle.h b/third_party/WebKit/Source/core/style/ComputedStyle.h
index f8b0e9a0d2faec907584622e21be33ded96b1d73..683c73ee3df98a0de6c1dfffcb22f4517ebecd44 100644
--- a/third_party/WebKit/Source/core/style/ComputedStyle.h
+++ b/third_party/WebKit/Source/core/style/ComputedStyle.h
@@ -611,31 +611,33 @@ class CORE_EXPORT ComputedStyle : public ComputedStyleBase,
   void setBorderImageOutset(const BorderImageLengthBox&);
 
   // Border width properties.
-  static unsigned initialBorderWidth() { return 3; }
+  static float initialBorderWidth() { return 3; }
 
   // border-top-width
-  int borderTopWidth() const { return m_surround->border.borderTopWidth(); }
-  void setBorderTopWidth(unsigned v) {
+  float borderTopWidth() const { return m_surround->border.borderTopWidth(); }
+  void setBorderTopWidth(float v) {
     SET_VAR(m_surround, border.m_top.m_width, v);
   }
 
   // border-bottom-width
-  int borderBottomWidth() const {
+  float borderBottomWidth() const {
     return m_surround->border.borderBottomWidth();
   }
-  void setBorderBottomWidth(unsigned v) {
+  void setBorderBottomWidth(float v) {
     SET_VAR(m_surround, border.m_bottom.m_width, v);
   }
 
   // border-left-width
-  int borderLeftWidth() const { return m_surround->border.borderLeftWidth(); }
-  void setBorderLeftWidth(unsigned v) {
+  float borderLeftWidth() const { return m_surround->border.borderLeftWidth(); }
+  void setBorderLeftWidth(float v) {
     SET_VAR(m_surround, border.m_left.m_width, v);
   }
 
   // border-right-width
-  int borderRightWidth() const { return m_surround->border.borderRightWidth(); }
-  void setBorderRightWidth(unsigned v) {
+  float borderRightWidth() const {
+    return m_surround->border.borderRightWidth();
+  }
+  void setBorderRightWidth(float v) {
     SET_VAR(m_surround, border.m_right.m_width, v);
   }
 
@@ -1456,7 +1458,7 @@ class CORE_EXPORT ComputedStyle : public ComputedStyleBase,
 
   // outline-width
   static unsigned short initialOutlineWidth() { return 3; }
-  int outlineWidth() const {
+  unsigned short outlineWidth() const {
     if (m_rareNonInheritedData->m_outline.style() == BorderStyleNone)
       return 0;
     return m_rareNonInheritedData->m_outline.width();
@@ -3181,12 +3183,12 @@ class CORE_EXPORT ComputedStyle : public ComputedStyleBase,
   const BorderValue& borderAfter() const;
   const BorderValue& borderStart() const;
   const BorderValue& borderEnd() const;
-  int borderAfterWidth() const;
-  int borderBeforeWidth() const;
-  int borderEndWidth() const;
-  int borderStartWidth() const;
-  int borderOverWidth() const;
-  int borderUnderWidth() const;
+  float borderAfterWidth() const;
+  float borderBeforeWidth() const;
+  float borderEndWidth() const;
+  float borderStartWidth() const;
+  float borderOverWidth() const;
+  float borderUnderWidth() const;
 
   bool hasBorderFill() const { return m_surround->border.hasBorderFill(); }
   bool hasBorder() const { return m_surround->border.hasBorder(); }