Scrollbar no longer inherits from FrameViewBase.

third_party/WebKit/Source/platform/scroll/ScrollbarThemeClient.h

Index: third_party/WebKit/Source/platform/scroll/ScrollbarThemeClient.h
diff --git a/third_party/WebKit/Source/platform/scroll/ScrollbarThemeClient.h b/third_party/WebKit/Source/platform/scroll/ScrollbarThemeClient.h
index 70abb84f7f234569c23f699f1ddee5f90f3d6e85..45075f28a37ea232a3d7b092e0149afa16fd137b 100644
--- a/third_party/WebKit/Source/platform/scroll/ScrollbarThemeClient.h
+++ b/third_party/WebKit/Source/platform/scroll/ScrollbarThemeClient.h
@@ -35,8 +35,6 @@
 
 namespace blink {
 
-class FrameViewBase;
-
 class PLATFORM_EXPORT ScrollbarThemeClient {
  public:
   virtual int X() const = 0;
@@ -46,9 +44,6 @@ class PLATFORM_EXPORT ScrollbarThemeClient {
   virtual IntSize Size() const = 0;
   virtual IntPoint Location() const = 0;
 
-  virtual FrameViewBase* Parent() const = 0;
-  virtual FrameViewBase* Root() const = 0;
-
   virtual void SetFrameRect(const IntRect&) = 0;
   virtual IntRect FrameRect() const = 0;