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 3629d5ef3a7601f61ba064e4713743a39faccfe6..c278579cae5a5d6bcda835e6c8bd121c2b20ab2a 100644
--- a/Source/core/page/FocusController.cpp
+++ b/Source/core/page/FocusController.cpp
@@ -713,6 +713,10 @@ 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.
@@ -726,6 +730,15 @@ 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)