Add prefix to empty param tests.

googletest will no longer support empty prefix
for parameterized INSTANTIATE_TEST_SUITE_P.
Adding "All" prefix to existing empty prefix test suites.

This CL was uploaded by git cl split.

R=shivanisha@chromium.org

Bug: 1023677
Change-Id: I4ecb846b64a36236013f36b7d16a663c134f3412
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1955082
Auto-Submit: Ilia Samsonov <isamsonov@google.com>
Reviewed-by: Shivani Sharma <shivanisha@chromium.org>
Commit-Queue: Ilia Samsonov <isamsonov@google.com>
Cr-Commit-Position: refs/heads/master@{#726545}

net/http/http_cache_lookup_manager_unittest.cc

@@ -208,7 +208,7 @@ TEST_P(HttpCacheLookupManagerTest_NetworkIsolationKey, ServerPushCacheStatus) {
 }
 
 INSTANTIATE_TEST_SUITE_P(
-    /* no prefix */,
+    All,
     HttpCacheLookupManagerTest_NetworkIsolationKey,
     ::testing::Bool());