Move ash specific cursor code to CursorManager.

ui/base/x/x11_util.h

 // Copyright (c) 2012 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 UI_BASE_X_X11_UTIL_H_
 #define UI_BASE_X_X11_UTIL_H_
 
 // This file declares utility functions for X11 (Linux only).
 //
 // These functions do not require the Xlib headers to be included (which is why
@@ skipping 79 matching lines @@
 
 // Decreases the refcount of the custom cursor, and destroys it if it reaches 0.
 UI_EXPORT void UnrefCustomXCursor(::Cursor cursor);
 
 // Creates a XcursorImage and copies the SkBitmap |bitmap| on it. |bitmap|
 // should be non-null. Caller owns the returned object.
 UI_EXPORT XcursorImage* SkBitmapToXcursorImage(const SkBitmap* bitmap,
                                                const gfx::Point& hotspot);
 #endif
 
+// Hides the host cursor.
+UI_EXPORT void HideHostCursor();
+
+// Returns an invisible cursor.
+UI_EXPORT ::Cursor CreateInvisibleCursor();
+
 // These functions do not cache their results --------------------------
 
 // Get the X window id for the default root window
 UI_EXPORT XID GetX11RootWindow();
 
 // Returns the user's current desktop.
 bool GetCurrentDesktop(int* desktop);
 
 #if defined(TOOLKIT_GTK)
 // Get the X window id for the given GTK widget.
@@ skipping 199 matching lines @@
   ~XScopedString();
 
   const char* string() const { return string_; }
 
  private:
   char* string_;
 
   DISALLOW_COPY_AND_ASSIGN(XScopedString);
 };
 
+// Keeps track of a cursor returned by an X function and makes sure it's
+// XFreeCursor'd.
+class UI_EXPORT XScopedCursor {
+ public:
+  // Keeps track of |cursor| created with |display|.
+  XScopedCursor(::Cursor cursor, Display* display);
+  ~XScopedCursor();
+
+  ::Cursor get() const;
+  void reset(::Cursor cursor);
+
+ private:
+  ::Cursor cursor_;
+  Display* display_;
+
+  DISALLOW_COPY_AND_ASSIGN(XScopedCursor);
+};
+
 }  // namespace ui
 
 #endif  // UI_BASE_X_X11_UTIL_H_