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=vakh@chromium.org

Bug: 1023677
Change-Id: Ic7a153086db33c029e69f2d2ddfba7b2b3fbaac2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1926790
Auto-Submit: Ilia Samsonov <isamsonov@google.com>
Reviewed-by: Varun Khaneja <vakh@chromium.org>
Commit-Queue: Varun Khaneja <vakh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#718838}

chrome/browser/extensions/api/safe_browsing_private/safe_browsing_private_event_router_unittest.cc

@@ -736,7 +736,7 @@ TEST_P(SafeBrowsingIsRealtimeReportingEnabledTest, CheckRealtimeReport) {
     Mock::VerifyAndClearExpectations(client_);
 }
 
-INSTANTIATE_TEST_SUITE_P(,
+INSTANTIATE_TEST_SUITE_P(All,
                          SafeBrowsingIsRealtimeReportingEnabledTest,
                          testing::Combine(testing::Bool(),
                                           testing::Bool(),