Remove unneeded friends from UKM recorders.

Change-Id: I5d69a8eb4a09f10a0127a445c971419dd7a79ea4
Reviewed-on: https://chromium-review.googlesource.com/1054384Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
Commit-Queue: Steven Holte <holte@chromium.org>
Cr-Commit-Position: refs/heads/master@{#558048}

components/ukm/ukm_service.h

@@ -85,14 +85,6 @@ class UkmService : public UkmRecorderImpl {
   friend ::metrics::UkmEGTestHelper;
   friend ::ukm::debug::UkmDebugDataExtractor;
 
-  FRIEND_TEST_ALL_PREFIXES(UkmServiceTest, AddEntryWithEmptyMetrics);
-  FRIEND_TEST_ALL_PREFIXES(UkmServiceTest, EntryBuilderAndSerialization);
-  FRIEND_TEST_ALL_PREFIXES(UkmServiceTest,
-                           LogsUploadedOnlyWhenHavingSourcesOrEntries);
-  FRIEND_TEST_ALL_PREFIXES(UkmServiceTest, MetricsProviderTest);
-  FRIEND_TEST_ALL_PREFIXES(UkmServiceTest, PersistAndPurge);
-  FRIEND_TEST_ALL_PREFIXES(UkmServiceTest, WhitelistEntryTest);
-
   // Starts metrics client initialization.
   void StartInitTask();
 

services/metrics/public/cpp/ukm_recorder.h

@@ -122,12 +122,6 @@ class METRICS_EXPORT UkmRecorder {
   friend password_manager::PasswordManagerMetricsRecorder;
   friend payments::JourneyLogger;
   friend translate::TranslateRankerImpl;
-  FRIEND_TEST_ALL_PREFIXES(UkmServiceTest, AddEntryWithEmptyMetrics);
-  FRIEND_TEST_ALL_PREFIXES(UkmServiceTest,
-                           LogsUploadedOnlyWhenHavingSourcesOrEntries);
-  FRIEND_TEST_ALL_PREFIXES(UkmServiceTest, MetricsProviderTest);
-  FRIEND_TEST_ALL_PREFIXES(UkmServiceTest, PersistAndPurge);
-  FRIEND_TEST_ALL_PREFIXES(UkmServiceTest, WhitelistEntryTest);
 
   // Associates the SourceId with a URL. Most UKM recording code should prefer
   // to use a shared SourceId that is already associated with a URL, rather