remove unused SkAutoROCanvasPixels

include/core/SkCanvas.h

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkCanvas_DEFINED
 #define SkCanvas_DEFINED
 
@@ skipping 1536 matching lines @@
             fCanvas = NULL;
         }
     }
 
 private:
     SkCanvas*   fCanvas;
     int         fSaveCount;
 };
 #define SkAutoCanvasRestore(...) SK_REQUIRE_LOCAL_VAR(SkAutoCanvasRestore)
 
-/**
- *  If the caller wants read-only access to the pixels in a canvas, it can just
- *  call canvas->peekPixels(), since that is the fastest way to "peek" at the
- *  pixels on a raster-backed canvas.
- *
- *  If the canvas has pixels, but they are not readily available to the CPU
- *  (e.g. gpu-backed), then peekPixels() will fail, but readPixels() will
- *  succeed (though be slower, since it will return a copy of the pixels).
- *
- *  SkAutoROCanvasPixels encapsulates these two techniques, trying first to call
- *  peekPixels() (for performance), but if that fails, calling readPixels() and
- *  storing the copy locally.
- *
- *  The caller must respect the restrictions associated with peekPixels(), since
- *  that may have been called: The returned information is invalidated if...
- *      - any API is called on the canvas (or its parent surface if present)
- *      - the canvas goes out of scope
- */
-class SkAutoROCanvasPixels : SkNoncopyable {
-public:
-    SkAutoROCanvasPixels(SkCanvas* canvas);
-
-    // returns NULL on failure
-    const void* addr() const { return fAddr; }
-
-    // undefined if addr() == NULL
-    size_t rowBytes() const { return fRowBytes; }
-
-    // undefined if addr() == NULL
-    const SkImageInfo& info() const { return fInfo; }
-
-    // helper that, if returns true, installs the pixels into the bitmap. Note
-    // that the bitmap may reference the address returned by peekPixels(), so
-    // the caller must respect the restrictions associated with peekPixels().
-    bool asROBitmap(SkBitmap*) const;
-
-private:
-    SkBitmap    fBitmap;    // used if peekPixels() fails
-    const void* fAddr;      // NULL on failure
-    SkImageInfo fInfo;
-    size_t      fRowBytes;
-};
-
 #ifdef SK_SUPPORT_LEGACY_SAVEFLAGS
 static inline SkCanvas::SaveFlags operator|(const SkCanvas::SaveFlags lhs,
                                             const SkCanvas::SaveFlags rhs) {
     return static_cast<SkCanvas::SaveFlags>(static_cast<int>(lhs) | static_cast<int>(rhs));
 }
 
 static inline SkCanvas::SaveFlags& operator|=(SkCanvas::SaveFlags& lhs,
                                               const SkCanvas::SaveFlags rhs) {
     lhs = lhs | rhs;
     return lhs;
 }
 #endif
 
 class SkCanvasClipVisitor {
 public:
     virtual ~SkCanvasClipVisitor();
     virtual void clipRect(const SkRect&, SkRegion::Op, bool antialias) = 0;
     virtual void clipRRect(const SkRRect&, SkRegion::Op, bool antialias) = 0;
     virtual void clipPath(const SkPath&, SkRegion::Op, bool antialias) = 0;
 };
 
 #endif