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=mlamouri@chromium.org

Bug: 1023677
Change-Id: Ie508e6499be964b52ee1567967f4fc7a5ca4a1a1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1926809
Auto-Submit: Ilia Samsonov <isamsonov@google.com>
Reviewed-by: Mounir Lamouri <mlamouri@chromium.org>
Commit-Queue: Mounir Lamouri <mlamouri@chromium.org>
Cr-Commit-Position: refs/heads/master@{#717713}

chrome/browser/media/media_engagement_service_unittest.cc

@@ -860,7 +860,7 @@ TEST_P(MediaEngagementServiceTest, SchemaVersion_Same) {
   new_service->Shutdown();
 }
 
-INSTANTIATE_TEST_SUITE_P(, MediaEngagementServiceTest, ::testing::Bool());
+INSTANTIATE_TEST_SUITE_P(All, MediaEngagementServiceTest, ::testing::Bool());
 
 class MediaEngagementServiceEnabledTest
     : public ChromeRenderViewHostTestHarness {};