move to modify onCreateDevice virtual

src/utils/SkPictureUtils.cpp

Index: src/utils/SkPictureUtils.cpp
diff --git a/src/utils/SkPictureUtils.cpp b/src/utils/SkPictureUtils.cpp
index 391e5ffc795d290b49a3920610b116c8dc89c388..3127497ff0b705440e8e28be56e8e5f49ae4c60a 100644
--- a/src/utils/SkPictureUtils.cpp
+++ b/src/utils/SkPictureUtils.cpp
@@ -157,10 +157,10 @@ protected:
     virtual void replaceBitmapBackendForRasterSurface(const SkBitmap&) SK_OVERRIDE {
         not_supported();
     }
-    virtual SkBaseDevice* onCreateDevice(const SkImageInfo& info, Usage usage) SK_OVERRIDE {
+    virtual SkBaseDevice* onCreateCompatibleDevice(const CreateInfo& cinfo) SK_OVERRIDE {
         // we expect to only get called via savelayer, in which case it is fine.
-        SkASSERT(kSaveLayer_Usage == usage);
-        return SkNEW_ARGS(GatherPixelRefDevice, (info.width(), info.height(), fPRSet));
+        SkASSERT(kSaveLayer_Usage == cinfo.fUsage);
+        return SkNEW_ARGS(GatherPixelRefDevice, (cinfo.fInfo.width(), cinfo.fInfo.height(), fPRSet));
     }
     virtual void flush() SK_OVERRIDE {}