Remove unused blitting functions from ui/gfx/blit.cc

ui/gfx/blit.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_BLIT_H_
 #define UI_GFX_BLIT_H_
 
 #include "ui/gfx/gfx_export.h"
 #include "ui/gfx/native_widget_types.h"
 
 class SkCanvas;
 
 namespace gfx {
 
 class Point;
 class Rect;
 class Vector2d;
 
 // Blits a rectangle from the source context into the destination context.
 GFX_EXPORT void BlitContextToContext(NativeDrawingContext dst_context,
                                      const Rect& dst_rect,
                                      NativeDrawingContext src_context,
                                      const Point& src_origin);
 
-// Blits a rectangle from the source context into the destination canvas.
-GFX_EXPORT void BlitContextToCanvas(SkCanvas *dst_canvas,
-                                    const Rect& dst_rect,
-                                    NativeDrawingContext src_context,
-                                    const Point& src_origin);
-
-// Blits a rectangle from the source canvas into the destination context.
-GFX_EXPORT void BlitCanvasToContext(NativeDrawingContext dst_context,
-                                    const Rect& dst_rect,
-                                    SkCanvas *src_canvas,
-                                    const Point& src_origin);
-
 // Blits a rectangle from the source canvas into the destination canvas.
 GFX_EXPORT void BlitCanvasToCanvas(SkCanvas *dst_canvas,
                                    const Rect& dst_rect,
                                    SkCanvas *src_canvas,
                                    const Point& src_origin);
 
 // Scrolls the given subset of the given canvas by the given offset.
 // The canvas should not have a clip or a transform applied, since platforms
 // may implement those operations differently.
 GFX_EXPORT void ScrollCanvas(SkCanvas* canvas,
                              const Rect& clip,
                              const Vector2d& offset);
 
 }  // namespace gfx
 
 #endif  // UI_GFX_BLIT_H_