Hide fields in SkImageInfo

R=rmistry@google.com
TBR=bsalomon

Author: reed@google.com

Review URL: https://codereview.chromium.org/536003002
diff --git a/tests/SerializationTest.cpp b/tests/SerializationTest.cpp
index 450f94f..ea03e87 100644
--- a/tests/SerializationTest.cpp
+++ b/tests/SerializationTest.cpp
@@ -463,9 +463,8 @@
         validBitmap.setInfo(info);
 
         // Create a bitmap with a really large height
-        info.fHeight = 1000000000;
         SkBitmap invalidBitmap;
-        invalidBitmap.setInfo(info);
+        invalidBitmap.setInfo(info.makeWH(info.width(), 1000000000));
 
         // The deserialization should succeed, and the rendering shouldn't crash,
         // even when the device fails to initialize, due to its size