Remove metrics preferences from incognito whitelist.

The following preferences are removed from persistent preferences in
incognito mode:
 - metrics::prefs::kInstallDate/kUnisntall*
 - metrics::prefs::kMetrics*
 - metrics::prefs::kStability*
 - metrics::prefs::k*CellDataUse

After this change, if these preferences are written to an incognito
profile, they would not be persisted in their regular profile.
All of these preferences are already written to local state.

Bug: 861722
Change-Id: Iad0df3d31462a8373432d38a591a131ea8e27679
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2095718
Commit-Queue: Ramin Halavati <rhalavati@chromium.org>
Reviewed-by: Alexei Svitkine <asvitkine@chromium.org>
Cr-Commit-Position: refs/heads/master@{#749050}

chrome/browser/prefs/pref_service_incognito_whitelist.cc

@@ -91,60 +91,6 @@ const char* const kPersistentPrefNames[] = {
     prefs::kPartnerBookmarkMappings,
 #endif  // defined(OS_ANDROID)
 
-    // Metrics preferences are out of profile scope and are merged between
-    // incognito and regular modes.
-    metrics::prefs::kInstallDate,
-    metrics::prefs::kMetricsClientID,
-    metrics::prefs::kMetricsDefaultOptIn,
-    metrics::prefs::kMetricsInitialLogs,
-    metrics::prefs::kMetricsLowEntropySource,
-    metrics::prefs::kMetricsMachineId,
-    metrics::prefs::kMetricsOngoingLogs,
-    metrics::prefs::kMetricsResetIds,
-
-    metrics::prefs::kMetricsReportingEnabled,
-    metrics::prefs::kMetricsReportingEnabledTimestamp,
-    metrics::prefs::kMetricsSessionID,
-    metrics::prefs::kMetricsLastSeenPrefix,
-    metrics::prefs::kStabilityBreakpadRegistrationFail,
-    metrics::prefs::kStabilityBreakpadRegistrationSuccess,
-    metrics::prefs::kStabilityBrowserLastLiveTimeStamp,
-    metrics::prefs::kStabilityChildProcessCrashCount,
-    metrics::prefs::kStabilityCrashCount,
-    metrics::prefs::kStabilityCrashCountDueToGmsCoreUpdate,
-    metrics::prefs::kStabilityCrashCountWithoutGmsCoreUpdateObsolete,
-    metrics::prefs::kStabilityDebuggerNotPresent,
-    metrics::prefs::kStabilityDebuggerPresent,
-    metrics::prefs::kStabilityDeferredCount,
-    metrics::prefs::kStabilityDiscardCount,
-    metrics::prefs::kStabilityExecutionPhase,
-    metrics::prefs::kStabilityExitedCleanly,
-    metrics::prefs::kStabilityExtensionRendererCrashCount,
-    metrics::prefs::kStabilityExtensionRendererFailedLaunchCount,
-    metrics::prefs::kStabilityExtensionRendererLaunchCount,
-    metrics::prefs::kStabilityGmsCoreVersion,
-    metrics::prefs::kStabilityGpuCrashCount,
-    metrics::prefs::kStabilityIncompleteSessionEndCount,
-    metrics::prefs::kStabilityLaunchCount,
-    metrics::prefs::kStabilityPageLoadCount,
-    metrics::prefs::kStabilityRendererCrashCount,
-    metrics::prefs::kStabilityRendererFailedLaunchCount,
-    metrics::prefs::kStabilityRendererHangCount,
-    metrics::prefs::kStabilityRendererLaunchCount,
-    metrics::prefs::kStabilitySavedSystemProfile,
-    metrics::prefs::kStabilitySavedSystemProfileHash,
-    metrics::prefs::kStabilitySessionEndCompleted,
-    metrics::prefs::kStabilityStatsBuildTime,
-    metrics::prefs::kStabilityStatsVersion,
-    metrics::prefs::kStabilitySystemCrashCount,
-    metrics::prefs::kStabilityVersionMismatchCount,
-    metrics::prefs::kUninstallLaunchCount,
-    metrics::prefs::kUninstallMetricsPageLoadCount,
-    metrics::prefs::kUninstallMetricsUptimeSec,
-    metrics::prefs::kUkmCellDataUse,
-    metrics::prefs::kUmaCellDataUse,
-    metrics::prefs::kUserCellDataUse,
-
 #if defined(OS_ANDROID)
     // Clipboard modification state is updated over all profiles.
     prefs::kClipboardLastModifiedTime,