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/Test.cpp b/tests/Test.cpp
index 994a342..daa23b1 100644
--- a/tests/Test.cpp
+++ b/tests/Test.cpp
@@ -7,10 +7,10 @@
  */
 #include "Test.h"
 
+#include "SkError.h"
 #include "SkString.h"
 #include "SkTArray.h"
 #include "SkTime.h"
-#include "SkError.h"
 
 #if SK_SUPPORT_GPU
 #include "GrContext.h"