Checking structure sizes before reading them from memory to avoid overflowing the buffer's stream.

BUG=
R=reed@google.com, mtklein@google.com, senorblanco@chromium.org

Committed: https://code.google.com/p/skia/source/detail?r=12114

Committed: https://code.google.com/p/skia/source/detail?r=12119

Author: sugoi@chromium.org

Review URL: https://codereview.chromium.org/41253002

git-svn-id: http://skia.googlecode.com/svn/trunk@12130 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/samplecode/SampleRegion.cpp b/samplecode/SampleRegion.cpp
index 1bd3162..39c27a8 100644
--- a/samplecode/SampleRegion.cpp
+++ b/samplecode/SampleRegion.cpp
@@ -280,7 +280,7 @@
                 SkASSERT(size == size2);
 
                 SkRegion    tmp3;
-                SkDEBUGCODE(size2 = ) tmp3.readFromMemory(buffer);
+                SkDEBUGCODE(size2 = ) tmp3.readFromMemory(buffer, 1000);
                 SkASSERT(size == size2);
 
                 SkASSERT(tmp3 == tmp);