add new readPixels with direct memory parameters

src/utils/SkDeferredCanvas.cpp

Index: src/utils/SkDeferredCanvas.cpp
diff --git a/src/utils/SkDeferredCanvas.cpp b/src/utils/SkDeferredCanvas.cpp
index 9051874870b5884f62a273b28bcc10456e8fe441..2e3f5bb6a5bea72b2dcbf37dd0bfc6c9a9656478 100644
--- a/src/utils/SkDeferredCanvas.cpp
+++ b/src/utils/SkDeferredCanvas.cpp
@@ -171,9 +171,12 @@ public:
 
 protected:
     virtual const SkBitmap& onAccessBitmap() SK_OVERRIDE;
+#ifdef SK_SUPPORT_LEGACY_READPIXELSCONFIG
     virtual bool onReadPixels(const SkBitmap& bitmap,
                                 int x, int y,
                                 SkCanvas::Config8888 config8888) SK_OVERRIDE;
+#endif
+    virtual bool onReadPixels(const SkImageInfo&, void*, size_t, int x, int y) SK_OVERRIDE;
     virtual bool onWritePixels(const SkImageInfo&, const void*, size_t, int x, int y) SK_OVERRIDE;
 
     // The following methods are no-ops on a deferred device
@@ -506,12 +509,20 @@ SkSurface* SkDeferredDevice::newSurface(const SkImageInfo& info) {
     return this->immediateDevice()->newSurface(info);
 }
 
+#ifdef SK_SUPPORT_LEGACY_READPIXELSCONFIG
 bool SkDeferredDevice::onReadPixels(
     const SkBitmap& bitmap, int x, int y, SkCanvas::Config8888 config8888) {
     this->flushPendingCommands(kNormal_PlaybackMode);
     return fImmediateCanvas->readPixels(const_cast<SkBitmap*>(&bitmap),
                                                    x, y, config8888);
 }
+#endif
+
+bool SkDeferredDevice::onReadPixels(const SkImageInfo& info, void* pixels, size_t rowBytes,
+                                    int x, int y) {
+    this->flushPendingCommands(kNormal_PlaybackMode);
+    return fImmediateCanvas->readPixels(info, pixels, rowBytes, x, y);
+}
 
 class AutoImmediateDrawIfNeeded {
 public: