Remove gtest_prod.h include from JSONReader.

base/json/json_reader.h

Index: base/json/json_reader.h
diff --git a/base/json/json_reader.h b/base/json/json_reader.h
index 9a82e7f05d014fa635a39d50e120cbd8fb8e94d2..47598f42a6e2c230717421664bda044c28c4ad1a 100644
--- a/base/json/json_reader.h
+++ b/base/json/json_reader.h
@@ -34,7 +34,12 @@
 #include <string>
 
 #include "base/basictypes.h"
-#include "testing/gtest/include/gtest/gtest_prod.h"
+
+// Chromium and Chromium OS check out gtest to different places, so we're
+// unable to compile on both if we include gtest_prod.h here.  Instead, include
+// its only contents -- this will need to be updated if the macro ever changes.
+#define FRIEND_TEST(test_case_name, test_name)\
+friend class test_case_name##_##test_name##_Test
 
 class Value;