add SkBitmap::installPixelRef()

src/image/SkSurface_Raster.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 67 matching lines @@
 
 SkSurface_Raster::SkSurface_Raster(const SkImageInfo& info, void* pixels, size_t rb)
     : INHERITED(info)
 {
     fBitmap.setConfig(info, rb);
     fBitmap.setPixels(pixels);
     fWeOwnThePixels = false;    // We are "Direct"
 }
 
 SkSurface_Raster::SkSurface_Raster(SkPixelRef* pr)
-    : INHERITED(pr->info().fWidth, pr->info().fHeight)
+    : INHERITED(pr->info())
 {
-    const SkImageInfo& info = pr->info();
-
-    fBitmap.setConfig(info, info.minRowBytes());
-    fBitmap.setPixelRef(pr);
+    fBitmap.installPixelRef(pr);
     fWeOwnThePixels = true;
 
-    if (!info.isOpaque()) {
+    if (!pr->info().isOpaque()) {
         fBitmap.eraseColor(SK_ColorTRANSPARENT);
     }
 }
 
 SkCanvas* SkSurface_Raster::onNewCanvas() {
     return SkNEW_ARGS(SkCanvas, (fBitmap));
 }
 
 SkSurface* SkSurface_Raster::onNewSurface(const SkImageInfo& info) {
     return SkSurface::NewRaster(info);
@@ skipping 45 matching lines @@
     if (!SkSurface_Raster::Valid(info)) {
         return NULL;
     }
 
     SkAutoTUnref<SkPixelRef> pr(SkMallocPixelRef::NewAllocate(info, 0, NULL));
     if (NULL == pr.get()) {
         return NULL;
     }
     return SkNEW_ARGS(SkSurface_Raster, (pr));
 }