[BuildBreak] Linux: Fix g++ 4.8 compilation for error: multi-line comment [-Werror=comment]

While compling on linux with g++ 4.8, the file chrome/test/ppapi/ppapi_browsertest.cc is throwing

../../chrome/test/ppapi/ppapi_browsertest.cc:452:1: error: multi-line comment [-Werror=comment]
cc1plus: all warnings being treated as errors

NOTRY=true

Review URL: https://codereview.chromium.org/386933002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@282597 0039d316-1c4b-4281-b951-d872f2087c98

chrome/test/ppapi/ppapi_browsertest.cc

@@ -449,7 +449,7 @@ TEST_PPAPI_NACL(HostResolverPrivate_ResolveIPv4)
 // TODO(yhirano): I remove this subtest from RUN_URLLOADER_SUBTESTS_3
 // in order to change the behavior in Blink.
 // Restore the subtest once it is landed.
-//      LIST_TEST(URLLoader_UntrustedHttpRequests)      \
+//      LIST_TEST(URLLoader_UntrustedHttpRequests)
 
 // Note: we do not support Trusted APIs in NaCl, so these will be skipped.
 #define RUN_URLLOADER_TRUSTED_SUBTESTS \