merge from android tree:
- optional parameters added to descriptorProc and allocPixels
- clip options to image decoders
- check for xfermode in blitter_a8
- UNROLL loops in blitrow

reviewed by reed@google.com



git-svn-id: http://skia.googlecode.com/svn/trunk@841 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/images/SkScaledBitmapSampler.h b/src/images/SkScaledBitmapSampler.h
index 84a75ba..43f16694 100644
--- a/src/images/SkScaledBitmapSampler.h
+++ b/src/images/SkScaledBitmapSampler.h
@@ -21,7 +21,8 @@
         kIndex, // 1 byte per pixel
         kRGB,   // 3 bytes per pixel
         kRGBX,  // 4 byes per pixel (ignore 4th)
-        kRGBA   // 4 bytes per pixel
+        kRGBA,  // 4 bytes per pixel
+        kRGB_565 // 2 bytes per pixel
     };
 
     // Given a dst bitmap (with pixels already allocated) and a src-config,