Make anchors mouse-focusable

Source/core/page/FocusController.h

Index: Source/core/page/FocusController.h
diff --git a/Source/core/page/FocusController.h b/Source/core/page/FocusController.h
index f12d1a0d738e38327a99abeefbd46d7ded4fe986..f6ac082c873dac5f6c23e605abf2c10d29a665b8 100644
--- a/Source/core/page/FocusController.h
+++ b/Source/core/page/FocusController.h
@@ -77,6 +77,8 @@ public:
     bool advanceFocus(FocusType type) { return advanceFocus(type, false); }
 
     bool setFocusedElement(Element*, PassRefPtr<Frame>, FocusType = FocusTypeNone);
+    bool setWasFocusedByMouse(bool);
+    bool wasFocusedByMouse() const { return m_wasFocusedByMouse; }
 
     void setActive(bool);
     bool isActive() const { return m_isActive; }
@@ -116,6 +118,7 @@ private:
 
     Page* m_page;
     RefPtr<Frame> m_focusedFrame;
+    bool m_wasFocusedByMouse;
     bool m_isActive;
     bool m_isFocused;
     bool m_isChangingFocusedFrame;