Rename RootScroller class to RootScrollerController.

third_party/WebKit/Source/core/page/scrolling/RootScrollerController.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef RootScroller_h
-#define RootScroller_h
+#ifndef RootScrollerController_h
+#define RootScrollerController_h
 
 #include "core/CoreExport.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
 class Document;
 class Element;
 class OverscrollController;
 class TopControls;
@@ skipping 11 matching lines @@
 // element we're using internally to apply viewport scroll actions. i.e It's the
 // element with the ViewportScrollCallback set as its apply-scroll callback.
 // The effective root scroller will only be null during document initialization.
 //
 // If the root scroller element is a valid element to become the root scroller,
 // it will be promoted to the effective root scroller. If it is not valid, the
 // effective root scroller will fall back to a default Element (see
 // defaultEffectiveRootScroller()). The rules for what makes an element a valid
 // root scroller are set in isValidRootScroller(). The validity of the current
 // root scroller is re-checked after each layout.
-class CORE_EXPORT RootScroller : public GarbageCollected<RootScroller> {
+class CORE_EXPORT RootScrollerController
+    : public GarbageCollected<RootScrollerController> {
 public:
-    // Creates a RootScroller for the given document. An optional
-    // ViewportScrollCallback can be provided. If it is, RootScroller will
-    // ensure that the effectiveRootScroller element always has this set as the
-    // apply scroll callback.
-    static RootScroller* create(
+    // Creates a RootScrollerController for the given document. An optional
+    // ViewportScrollCallback can be provided. If it is, RootScrollerController
+    // will ensure that the effectiveRootScroller element always has this set as
+    // the apply scroll callback.
+    static RootScrollerController* create(
         Document& document,
         ViewportScrollCallback* applyScrollCallback)
     {
-        return new RootScroller(document, applyScrollCallback);
+        return new RootScrollerController(document, applyScrollCallback);
     }
 
     // Creates an apply scroll callback that handles viewport actions like
     // TopControls movement and Overscroll.
     static ViewportScrollCallback* createViewportApplyScroll(
         TopControls&, OverscrollController&);
 
     DECLARE_TRACE();
 
     // Sets the element that will be used as the root scroller. This can be
@@ skipping 13 matching lines @@
     // actions right now. This is different from get() if a root scroller hasn't
     // been set, or if the set root scroller isn't currently a valid scroller.
     Element* effectiveRootScroller() const;
 
     // This class needs to be informed of changes in layout so that it can
     // determine if the current root scroller is still valid or if it must be
     // replaced by the defualt root scroller.
     void didUpdateLayout();
 
 private:
-    RootScroller(Document&, ViewportScrollCallback*);
+    RootScrollerController(Document&, ViewportScrollCallback*);
 
     Element* defaultEffectiveRootScroller();
 
     // Ensures the effective root scroller is currently valid and replaces it
     // with the default if not.
     void updateEffectiveRootScroller();
     void moveViewportApplyScroll(Element* target);
 
     WeakMember<Document> m_document;
     Member<ViewportScrollCallback> m_viewportApplyScroll;
 
     WeakMember<Element> m_rootScroller;
     WeakMember<Element> m_effectiveRootScroller;
 };
 
 } // namespace blink
 
-#endif // RootScroller_h
+#endif // RootScrollerController_h