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

There are no remaining call sites for either BlitContextToCanvas or
BlitCanvasToContext. Also remove some leftover #includes.

TEST=Linux built compiles & links.

Review URL: https://codereview.chromium.org/1138753003

Cr-Commit-Position: refs/heads/master@{#330543}

content/plugin/webplugin_proxy.cc

@@ -21,7 +21,6 @@
 #include "skia/ext/platform_canvas.h"
 #include "skia/ext/platform_device.h"
 #include "third_party/WebKit/public/web/WebBindings.h"
-#include "ui/gfx/blit.h"
 #include "ui/gfx/canvas.h"
 #include "url/url_constants.h"
 

content/renderer/sad_plugin.cc

@@ -8,7 +8,6 @@
 
 #include "base/memory/scoped_ptr.h"
 #include "skia/ext/platform_canvas.h"
-#include "ui/gfx/blit.h"
 #include "ui/gfx/geometry/rect.h"
 
 namespace content {

ui/gfx/blit.cc

@@ -110,26 +110,6 @@ void BlitContextToContext(NativeDrawingContext dst_context,
 #endif
 }
 
-void BlitContextToCanvas(SkCanvas *dst_canvas,
-                         const Rect& dst_rect,
-                         NativeDrawingContext src_context,
-                         const Point& src_origin) {
-  DCHECK(skia::SupportsPlatformPaint(dst_canvas));
-  BlitContextToContext(skia::BeginPlatformPaint(dst_canvas), dst_rect,
-                       src_context, src_origin);
-  skia::EndPlatformPaint(dst_canvas);
-}
-
-void BlitCanvasToContext(NativeDrawingContext dst_context,
-                         const Rect& dst_rect,
-                         SkCanvas *src_canvas,
-                         const Point& src_origin) {
-  DCHECK(skia::SupportsPlatformPaint(src_canvas));
-  BlitContextToContext(dst_context, dst_rect,
-                       skia::BeginPlatformPaint(src_canvas), src_origin);
-  skia::EndPlatformPaint(src_canvas);
-}
-
 void BlitCanvasToCanvas(SkCanvas *dst_canvas,
                         const Rect& dst_rect,
                         SkCanvas *src_canvas,

ui/gfx/blit.h

@@ -22,18 +22,6 @@ GFX_EXPORT void BlitContextToContext(NativeDrawingContext dst_context,
                                      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,