Remove last dependencies on ui/base from ui/gfx

ui/gfx/canvas.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_GFX_CANVAS_H_
 #define UI_GFX_CANVAS_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 20 matching lines @@
 // All methods that take integer arguments (as is used throughout views)
 // end with Int. If you need to use methods provided by SkCanvas, you'll
 // need to do a conversion. In particular you'll need to use |SkIntToScalar()|,
 // or if converting from a scalar to an integer |SkScalarRound()|.
 //
 // A handful of methods in this class are overloaded providing an additional
 // argument of type SkXfermode::Mode. SkXfermode::Mode specifies how the
 // source and destination colors are combined. Unless otherwise specified,
 // the variant that does not take a SkXfermode::Mode uses a transfer mode
 // of kSrcOver_Mode.
-class UI_EXPORT Canvas {
+class GFX_EXPORT Canvas {
  public:
   enum TruncateFadeMode {
     TruncateFadeTail,
     TruncateFadeHead,
     TruncateFadeHeadAndTail,
   };
 
   // Specifies the alignment for text rendered with the DrawStringInt method.
   enum {
     TEXT_ALIGN_LEFT = 1 << 0,
@@ skipping 426 matching lines @@
 
   skia::RefPtr<skia::PlatformCanvas> owned_canvas_;
   SkCanvas* canvas_;
 
   DISALLOW_COPY_AND_ASSIGN(Canvas);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GFX_CANVAS_H_