Move focus management API from HTMLDocument to Document

Source/core/html/HTMLDocument.cpp

Index: Source/core/html/HTMLDocument.cpp
diff --git a/Source/core/html/HTMLDocument.cpp b/Source/core/html/HTMLDocument.cpp
index 761a6e3093af1b111169f56524e2317c575d58b2..eee2118ea934d090320a0077bd7d938786aedc3e 100644
--- a/Source/core/html/HTMLDocument.cpp
+++ b/Source/core/html/HTMLDocument.cpp
@@ -111,27 +111,6 @@ void HTMLDocument::setDesignMode(const String& value)
     Document::setDesignMode(mode);
 }
 
-Element* HTMLDocument::activeElement()
-{
-    if (Element* element = treeScope().adjustedFocusedElement())
-        return element;
-    return body();
-}
-
-bool HTMLDocument::hasFocus()
-{
-    Page* page = this->page();
-    if (!page)
-        return false;
-    if (!page->focusController().isActive() || !page->focusController().isFocused())
-        return false;
-    if (Frame* focusedFrame = page->focusController().focusedFrame()) {
-        if (focusedFrame->tree().isDescendantOf(frame()))
-            return true;
-    }
-    return false;
-}
-
 HTMLBodyElement* HTMLDocument::htmlBodyElement() const
 {
     HTMLElement* body = this->body();