Make anchors mouse-focusable

Source/core/page/FocusController.cpp

Index: Source/core/page/FocusController.cpp
diff --git a/Source/core/page/FocusController.cpp b/Source/core/page/FocusController.cpp
index 149ff8a87bca01cdc267d43e738c6569f5615562..167610ee5e9c0014c55128d3fed13899b3eb1799 100644
--- a/Source/core/page/FocusController.cpp
+++ b/Source/core/page/FocusController.cpp
@@ -707,6 +707,10 @@ bool FocusController::setFocusedElement(Element* element, PassRefPtr<Frame> newF
         setFocusedFrame(nullptr);
         return false;
     }
+
+    if (type != FocusTypePage)
+        m_wasFocusedByMouse = type == FocusTypeMouse;
+
     setFocusedFrame(newFocusedFrame);
 
     // Setting the focused node can result in losing our last reft to node when JS event handlers fire.
@@ -720,6 +724,15 @@ bool FocusController::setFocusedElement(Element* element, PassRefPtr<Frame> newF
     return true;
 }
 
+bool FocusController::setWasFocusedByMouse(bool wasFocusedByMouse)
+{
+    if (m_wasFocusedByMouse != wasFocusedByMouse) {
+        m_wasFocusedByMouse = wasFocusedByMouse;
+        return true;
+    }
+    return false;
+}
+
 void FocusController::setActive(bool active)
 {
     if (m_isActive == active)