Cleanup: Sanitize the order of includes under tests/

Initially this was to make sure Test.h appeared after the Sk*.h includes.

Patch generated by the following command line:

$ ~/chromium/src/tools/sort-headers.py tests/*.cpp

BUG=None
TEST=tests
R=robertphillips@google.com

Review URL: https://codereview.chromium.org/145313004

git-svn-id: http://skia.googlecode.com/svn/trunk@13177 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tests/DataRefTest.cpp b/tests/DataRefTest.cpp
index e4c0a6b..731e448 100644
--- a/tests/DataRefTest.cpp
+++ b/tests/DataRefTest.cpp
@@ -5,13 +5,13 @@
  * found in the LICENSE file.
  */
 
-#include "Test.h"
 #include "SkData.h"
 #include "SkDataTable.h"
+#include "SkOSFile.h"
 #include "SkOrderedReadBuffer.h"
 #include "SkOrderedWriteBuffer.h"
-#include "SkOSFile.h"
 #include "SkStream.h"
+#include "Test.h"
 
 static void test_is_equal(skiatest::Reporter* reporter,
                           const SkDataTable* a, const SkDataTable* b) {