Fix reversed shift in the huge SetData test.

BUG=angle:716

Change-Id: I1b621668b78373e0566f6eab6034993ec09aa4b9
Reviewed-on: https://chromium-review.googlesource.com/213221
Tested-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>
diff --git a/tests/angle_tests/BufferDataTest.cpp b/tests/angle_tests/BufferDataTest.cpp
index 6401b94..153fcf2 100644
--- a/tests/angle_tests/BufferDataTest.cpp
+++ b/tests/angle_tests/BufferDataTest.cpp
@@ -128,7 +128,7 @@
 
         if (data == NULL)
         {
-            allocSize <<= 1;
+            allocSize >>= 1;
         }
     }