[GPU] Add explicit byte order and PM vs. UPM 8888 configs

Review URL: http://codereview.appspot.com/5347042/



git-svn-id: http://skia.googlecode.com/svn/trunk@2618 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/SkGrTexturePixelRef.cpp b/src/gpu/SkGrTexturePixelRef.cpp
index 40db1c5..140993a 100644
--- a/src/gpu/SkGrTexturePixelRef.cpp
+++ b/src/gpu/SkGrTexturePixelRef.cpp
@@ -78,7 +78,7 @@
         SkAutoLockPixels al(*dst);
         void* buffer = dst->getPixels();
         return fTexture->readPixels(left, top, width, height,
-                                    kRGBA_8888_GrPixelConfig,
+                                    kSkia8888_PM_GrPixelConfig,
                                     buffer);
     } else {
         return false;
@@ -122,7 +122,7 @@
         SkAutoLockPixels al(*dst);
         void* buffer = dst->getPixels();
         return fRenderTarget->readPixels(left, top, width, height,
-                                         kRGBA_8888_GrPixelConfig,
+                                         kSkia8888_PM_GrPixelConfig,
                                          buffer);
     } else {
         return false;