Rename kPMColor_SkColorType to kN32_SkColorType.

src/image/SkSurface_Picture.cpp

Index: src/image/SkSurface_Picture.cpp
diff --git a/src/image/SkSurface_Picture.cpp b/src/image/SkSurface_Picture.cpp
index 8f65b3eb557d4d57328b97c8bc4c417fb211d78d..f7d97acd1191f453c38d47959b18fec02ad1b25c 100644
--- a/src/image/SkSurface_Picture.cpp
+++ b/src/image/SkSurface_Picture.cpp
@@ -62,7 +62,7 @@ SkImage* SkSurface_Picture::onNewImageSnapshot() {
     } else {
         SkImageInfo info;
         info.fWidth = info.fHeight = 0;
-        info.fColorType = kPMColor_SkColorType;
+        info.fColorType = kN32_SkColorType;
         info.fAlphaType = kOpaque_SkAlphaType;
         return SkImage::NewRasterCopy(info, NULL, 0);
     }