Enable ServiceManagerForBackgroundPrefetch by default.

This flag is already 50% on stable, enable it by default.

Bug: 933358
Change-Id: Idebaa9a0544f0da022240864a96c38718df04332
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2426727Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Commit-Queue: Xi Han <hanxi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#809927}

chrome/browser/flags/android/chrome_feature_list.cc

@@ -539,7 +539,7 @@ const base::Feature kRelatedSearches{"RelatedSearches",
                                      base::FEATURE_DISABLED_BY_DEFAULT};
 
 const base::Feature kServiceManagerForBackgroundPrefetch{
-    "ServiceManagerForBackgroundPrefetch", base::FEATURE_DISABLED_BY_DEFAULT};
+    "ServiceManagerForBackgroundPrefetch", base::FEATURE_ENABLED_BY_DEFAULT};
 
 const base::Feature kServiceManagerForDownload{
     "ServiceManagerForDownload", base::FEATURE_ENABLED_BY_DEFAULT};

chrome/browser/flags/android/java/src/org/chromium/chrome/browser/flags/CachedFeatureFlags.java

@@ -52,7 +52,7 @@ public class CachedFeatureFlags {
             put(ChromeFeatureList.CONDITIONAL_TAB_STRIP_ANDROID, false);
             put(ChromeFeatureList.HOMEPAGE_LOCATION_POLICY, false);
             put(ChromeFeatureList.SERVICE_MANAGER_FOR_DOWNLOAD, false);
-            put(ChromeFeatureList.SERVICE_MANAGER_FOR_BACKGROUND_PREFETCH, false);
+            put(ChromeFeatureList.SERVICE_MANAGER_FOR_BACKGROUND_PREFETCH, true);
             put(ChromeFeatureList.INTEREST_FEED_CONTENT_SUGGESTIONS, true);
             put(ChromeFeatureList.COMMAND_LINE_ON_NON_ROOTED, false);
             put(ChromeFeatureList.DOWNLOADS_AUTO_RESUMPTION_NATIVE, true);