Move allocation of texture from SkGpuDevice to GrLayerCache

src/core/SkPicturePlayback.h

Index: src/core/SkPicturePlayback.h
diff --git a/src/core/SkPicturePlayback.h b/src/core/SkPicturePlayback.h
index 3cdd9af3f3fcb0523f95c33f9e12aaa9ba7aa360..87380a6aaf5960482393a060b5d85e7b12c9484f 100644
--- a/src/core/SkPicturePlayback.h
+++ b/src/core/SkPicturePlayback.h
@@ -345,7 +345,7 @@ private:
             size_t          fStart;
             size_t          fStop;
             SkIPoint        fPos;
-            SkBitmap*       fBM;
+            SkBitmap*       fBM;     // fBM is allocated so ReplacementInfo can remain POD
             const SkPaint*  fPaint;  // Note: this object doesn't own the paint
         };