add readPixels to SkImage

src/image/SkSurface.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkSurface_Base.h"
 #include "SkImagePriv.h"
 #include "SkCanvas.h"
@@ skipping 157 matching lines @@
 
 const void* SkSurface::peekPixels(SkImageInfo* info, size_t* rowBytes) {
     return this->getCanvas()->peekPixels(info, rowBytes);
 }
 
 bool SkSurface::readPixels(const SkImageInfo& dstInfo, void* dstPixels, size_t dstRowBytes,
                            int srcX, int srcY) {
     return this->getCanvas()->readPixels(dstInfo, dstPixels, dstRowBytes, srcX, srcY);
 }
 
-bool SkSurface::readPixels(SkBitmap* dst, const SkIRect* srcRect) {
-    SkIRect storage;
-    if (NULL == srcRect) {
-        storage.set(0, 0, this->width(), this->height());
-        srcRect = &storage;
-    }
-    return this->getCanvas()->readPixels(*srcRect, dst);
-}
-
 //////////////////////////////////////////////////////////////////////////////////////
 #ifdef SK_SUPPORT_LEGACY_TEXTRENDERMODE
 
 static SkSurfaceProps make_props(SkSurface::TextRenderMode trm) {
     uint32_t propsFlags = 0;
     if (SkSurface::kDistanceField_TextRenderMode == trm) {
         propsFlags |= SkSurfaceProps::kUseDistanceFieldFonts_Flag;
     }
     return SkSurfaceProps(propsFlags, SkSurfaceProps::kLegacyFontHost_InitType);
 }
@@ skipping 26 matching lines @@
 SkSurface* SkSurface::NewRenderTarget(GrContext*, const SkImageInfo&, int, const SkSurfaceProps*) {
     return NULL;
 }
 
 SkSurface* SkSurface::NewScratchRenderTarget(GrContext*, const SkImageInfo&, int sampleCount,
                                              const SkSurfaceProps*) {
     return NULL;
 }
 
 #endif