Move gtest_prod_util.h out of webrtc/test tree.

webrtc/base/gtest_prod_util.h

Index: webrtc/base/gtest_prod_util.h
diff --git a/webrtc/test/testsupport/gtest_prod_util.h b/webrtc/base/gtest_prod_util.h
similarity index 89%
rename from webrtc/test/testsupport/gtest_prod_util.h
rename to webrtc/base/gtest_prod_util.h
index 537058989993ddb54192a1bc555df72604985ba1..f0cb1145f9d1d9fc492621fef716180c777a64c3 100644
--- a/webrtc/test/testsupport/gtest_prod_util.h
+++ b/webrtc/base/gtest_prod_util.h
@@ -8,8 +8,8 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#ifndef WEBRTC_TEST_TESTSUPPORT_GTEST_PROD_UTIL_H_
-#define WEBRTC_TEST_TESTSUPPORT_GTEST_PROD_UTIL_H_
+#ifndef WEBRTC_BASE_GTEST_PROD_UTIL_H_
+#define WEBRTC_BASE_GTEST_PROD_UTIL_H_
 
 // Define our own version of FRIEND_TEST here rather than including
 // gtest_prod.h to avoid depending on any part of GTest in production code.
@@ -35,4 +35,4 @@ friend class test_case_name##_##test_name##_Test
   FRIEND_TEST_WEBRTC(test_case_name, FLAKY_##test_name); \
   FRIEND_TEST_WEBRTC(test_case_name, FAILS_##test_name)
 
-#endif  // WEBRTC_TEST_TESTSUPPORT_GTEST_PROD_UTIL_H_
+#endif  // WEBRTC_BASE_GTEST_PROD_UTIL_H_