Revert of add peekPixels to SkCanvas and SkSurface

gm/peekpixels.cpp

-/*
- * Copyright 2011 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "gm.h"
-#include "SkCanvas.h"
-#include "SkPath.h"
-#include "SkSurface.h"
-#include "SkPicture.h"
-
-static void draw_content(SkCanvas* canvas) {
-    SkImageInfo info = canvas->imageInfo();
-    SkPaint paint;
-    paint.setAntiAlias(true);
-    canvas->drawCircle(SkScalarHalf(info.width()), SkScalarHalf(info.height()),
-                       SkScalarHalf(info.width()), paint);
-}
-
-class PeekPixelsGM : public skiagm::GM {
-public:
-    PeekPixelsGM() {}
-
-protected:
-    virtual SkString onShortName() SK_OVERRIDE {
-        return SkString("peekpixels");
-    }
-
-    virtual SkISize onISize() SK_OVERRIDE {
-        return SkISize::Make(640, 480);
-    }
-
-    virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE {
-        SkImageInfo info = SkImageInfo::MakeN32Premul(100, 100);
-        SkAutoTUnref<SkSurface> surface(canvas->newSurface(info));
-        if (surface.get()) {
-            SkCanvas* surfCanvas = surface->getCanvas();
-            
-            draw_content(surfCanvas);
-            SkBitmap bitmap;
-            
-            // test peekPixels
-            {
-                SkImageInfo info;
-                size_t rowBytes;
-                const void* addr = surfCanvas->peekPixels(&info, &rowBytes);
-                if (addr && bitmap.installPixels(info, const_cast<void*>(addr),
-                                                 rowBytes, NULL, NULL)) {
-                    canvas->drawBitmap(bitmap, 0, 0, NULL);
-                }
-            }
-            
-            // test ROCanvasPixels
-            canvas->translate(120, 0);
-            SkAutoROCanvasPixels ropixels(surfCanvas);
-            if (ropixels.asROBitmap(&bitmap)) {
-                canvas->drawBitmap(bitmap, 0, 0, NULL);
-            }
-            
-            // test Surface
-            canvas->translate(120, 0);
-            surface->draw(canvas, 0, 0, NULL);
-        }
-    }
-
-    virtual uint32_t onGetFlags() const {
-        // we explicitly test peekPixels and readPixels, neither of which
-        // return something for a picture-backed canvas, so we skip that test.
-        return kSkipPicture_Flag;
-    }
-
-private:
-    typedef skiagm::GM INHERITED;
-};
-
-DEF_GM( return SkNEW(PeekPixelsGM); )