Make anchors mouse-focusable

Source/core/dom/ElementData.h

Index: Source/core/dom/ElementData.h
diff --git a/Source/core/dom/ElementData.h b/Source/core/dom/ElementData.h
index 8efccea8ed2bd25e90d7f96d3be920808467877f..43ecfa11353c9b374b332af6f15f9e26ed3e3060 100644
--- a/Source/core/dom/ElementData.h
+++ b/Source/core/dom/ElementData.h
@@ -89,10 +89,12 @@ protected:
 
     // Keep the type in a bitfield instead of using virtual destructors to avoid adding a vtable.
     unsigned m_isUnique : 1;
-    unsigned m_arraySize : 28;
+    unsigned m_arraySize : 19;

[pdr., 2014/08/25 22:57:37]

You cannot just take 9 bits off m_arraySize :)

It looks like we will need to find an extra bit elsewhere.

[robwu, 2014/08/25 23:14:58]

Oops, should have removed only one bit. 28 -> 27 is fine, right?

     mutable unsigned m_presentationAttributeStyleIsDirty : 1;
     mutable unsigned m_styleAttributeIsDirty : 1;
     mutable unsigned m_animatedSVGAttributesAreDirty : 1;
+    // Whether an element whose mouse focus ring is hidden by default should be rendered with a focus ring on mouse focus.
+    bool m_shouldHideFocusRingOnMouseFocus : 1;
 
     mutable RefPtrWillBeMember<StylePropertySet> m_inlineStyle;
     mutable SpaceSplitString m_classNames;