Cleanup: Sanitize the order of includes under tests/

tests/SrcOverTest.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
-#include "Test.h"
 #include "SkColorPriv.h"
 #include "SkXfermode.h"
+#include "Test.h"
 
 // our std SkAlpha255To256
 static int test_srcover0(unsigned dst, unsigned alpha) {
     return alpha + SkAlphaMul(dst, SkAlpha255To256(255 - alpha));
 }
 
 // faster hack +1
 static int test_srcover1(unsigned dst, unsigned alpha) {
     return alpha + SkAlphaMul(dst, 256 - alpha);
 }
@@ skipping 46 matching lines @@
 #if 0
             // this shows where r1 (faster) differs from r2 (more exact)
             if (r1 != r2) {
                 SkDebugf("--- dst=%d i=%d r1=%d r2=%d exact=%g\n",
                          dst, i, r1, r2, i + dst - dst*i/255.0f);
             }
 #endif
         }
     }
 }