Remove last dependencies on ui/base from ui/gfx

ui/gfx/canvas_paint_win.h

 // Copyright (c) 2011 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_GFX_CANVAS_PAINT_WIN_H_
 #define UI_GFX_CANVAS_PAINT_WIN_H_
 
 #include "skia/ext/platform_canvas.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/size.h"
@@ skipping 15 matching lines @@
 //     PAINTSTRUCT ps;
 //     HDC hdc = BeginPaint(hwnd, &ps);
 //     gfx::CanvasSkiaPaint canvas(hwnd, hdc, ps);
 //     if (!canvas.isEmpty()) {
 //       ... paint to the canvas ...
 //     }
 //     EndPaint(hwnd, &ps);
 //     return 0;
 //   }
 // Note: The created context is always inialized to (0, 0, 0, 0).
-class UI_EXPORT CanvasSkiaPaint : public Canvas {
+class GFX_EXPORT CanvasSkiaPaint : public Canvas {
  public:
   // This constructor assumes the canvas is opaque.
   CanvasSkiaPaint(HWND hwnd, HDC dc, const PAINTSTRUCT& ps);
   virtual ~CanvasSkiaPaint();
 
   // Creates a CanvasSkiaPaint for the specified region that paints to the
   // specified dc.
   CanvasSkiaPaint(HDC dc, bool opaque, int x, int y, int w, int h);
 
   // Returns the rectangle that is invalid.
@@ skipping 20 matching lines @@
   HDC paint_dc_;
   PAINTSTRUCT ps_;
 
   // Disallow copy and assign.
   DISALLOW_COPY_AND_ASSIGN(CanvasSkiaPaint);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GFX_CANVAS_PAINT_WIN_H_