Revert 263043 "Remove obsolete scale related APIs for cursor"

trunk/src/ui/wm/core/native_cursor_manager.h

Index: trunk/src/ui/wm/core/native_cursor_manager.h
===================================================================
--- trunk/src/ui/wm/core/native_cursor_manager.h	(revision 263047)
+++ trunk/src/ui/wm/core/native_cursor_manager.h	(working copy)
@@ -42,7 +42,12 @@
     bool visible,
     wm::NativeCursorManagerDelegate* delegate) = 0;
 
-  // A request to set the cursor set.
+  // A request to set the scale of the cursor icon.
+  virtual void SetScale(
+      float scale,
+      wm::NativeCursorManagerDelegate* delegate) = 0;
+
+  // A request to set the scale of the cursor icon.
   virtual void SetCursorSet(
       ui::CursorSetType cursor_set,
       wm::NativeCursorManagerDelegate* delegate) = 0;