Add feature flag for Enterprise policy HomepageLocation on Android

Add feature flag to control the exposure level of new feature during
development.

Bug: 978197
Change-Id: Ie9651ed8d981d6138409cafa30508d849d7b93b0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1900305
Commit-Queue: Wenyu Fu <wenyufu@chromium.org>
Reviewed-by: Theresa  <twellington@chromium.org>
Cr-Commit-Position: refs/heads/master@{#713107}

chrome/browser/about_flags.cc

@@ -4772,6 +4772,13 @@ const FeatureEntry kFeatureEntries[] = {
      FEATURE_VALUE_TYPE(arc::kEnableApplicationZoomFeature)},
 #endif  // defined(OS_CHROMEOS)
 
+#if defined(OS_ANDROID)
+    {"enable-home-page-location-policy",
+     flag_descriptions::kHomepageLocationName,
+     flag_descriptions::kHomepageLocationDescription, kOsAndroid,
+     FEATURE_VALUE_TYPE(chrome::android::kHomepageLocation)},
+#endif  // defined(OS_ANDROID)
+
     // NOTE: Adding a new flag requires adding a corresponding entry to enum
     // "LoginCustomFlags" in tools/metrics/histograms/enums.xml. See "Flag
     // Histograms" in tools/metrics/histograms/README.md (run the

chrome/browser/android/chrome_feature_list.cc

@@ -141,6 +141,7 @@ const base::Feature* kFeaturesExposedToJava[] = {
     &kEphemeralTabUsingBottomSheet,
     &kExploreSites,
     &kHandleMediaIntents,
+    &kHomepageLocation,
     &kHorizontalTabSwitcherAndroid,
     &kIdentityDisc,
     &kImmersiveUiMode,
@@ -427,6 +428,11 @@ const base::Feature kExploreSites{"ExploreSites",
 const base::Feature kHandleMediaIntents{"HandleMediaIntents",
                                         base::FEATURE_ENABLED_BY_DEFAULT};
 
+// Enable the HomePage Location feature that allows enterprise policy set and
+// force the home page url for managed devices.
+const base::Feature kHomepageLocation{"HomepageLocationPolicy",
+                                      base::FEATURE_DISABLED_BY_DEFAULT};
+
 const base::Feature kHorizontalTabSwitcherAndroid{
     "HorizontalTabSwitcherAndroid", base::FEATURE_DISABLED_BY_DEFAULT};
 

chrome/browser/android/chrome_feature_list.h

@@ -73,6 +73,7 @@ extern const base::Feature kEphemeralTab;
 extern const base::Feature kEphemeralTabUsingBottomSheet;
 extern const base::Feature kExploreSites;
 extern const base::Feature kHandleMediaIntents;
+extern const base::Feature kHomepageLocation;
 extern const base::Feature kHorizontalTabSwitcherAndroid;
 extern const base::Feature kIdentityDisc;
 extern const base::Feature kImmersiveUiMode;

chrome/browser/flag-metadata.json

@@ -1411,6 +1411,11 @@
     "owners": [ "shivanisha" ],
     "expiry_milestone": 76
   },
+  {
+    "name": "enable-home-page-location-policy",
+    "owners": [ "wenyufu", "chrome-android-app@chromium.org" ],
+    "expiry_milestone": 83
+  },
   {
     "name": "enable-horizontal-tab-switcher",
     "owners": [ "memex-team@google.com" ],

chrome/browser/flag_descriptions.cc

@@ -2569,6 +2569,12 @@ const char kGamesHubName[] = "Games Hub";
 const char kGamesHubDescription[] =
     "Enables viewing and usage of the Games Hub.";
 
+const char kHomepageLocationName[] =
+    "Enable enterprise policy HomepageLocation";
+const char kHomepageLocationDescription[] =
+    "Enable enterprice policy HomepageLocation, a rule of configure the home "
+    "page URL";
+
 const char kInterestFeedNotificationsName[] = "Interest Feed Notifications";
 const char kInterestFeedNotificationsDescription[] =
     "Show notifications for some suggested content from the interest feed. "

chrome/browser/flag_descriptions.h

@@ -1516,6 +1516,9 @@ extern const char kExploreSitesDescription[];
 extern const char kGamesHubName[];
 extern const char kGamesHubDescription[];
 
+extern const char kHomepageLocationName[];
+extern const char kHomepageLocationDescription[];
+
 extern const char kInterestFeedNotificationsName[];
 extern const char kInterestFeedNotificationsDescription[];
 

tools/metrics/histograms/enums.xml

@@ -37204,6 +37204,7 @@ from previous Chrome versions.
   <int value="-45067971" label="NewPrintPreview:disabled"/>
   <int value="-41672681" label="WebUITabStripDemoOptions:disabled"/>
   <int value="-40935502" label="ContextualSuggestionsSlimPeekUI:enabled"/>
+  <int value="-36503306" label="HomepageLocationPolicy:enabled"/>
   <int value="-35388407" label="AshNewSystemMenu:disabled"/>
   <int value="-31444029" label="MediaInspectorLogging:disabled"/>
   <int value="-30966385" label="enable-hardware-overlays"/>
@@ -37816,6 +37817,7 @@ from previous Chrome versions.
   <int value="752939691" label="disable-tab-for-desktop-share"/>
   <int value="760542355" label="ServiceWorkerScriptFullCodeCache:enabled"/>
   <int value="762700519" label="enable-checker-imaging"/>
+  <int value="763947368" label="HomepageLocationPolicy:disabled"/>
   <int value="765306424" label="ModuleScriptsDynamicImport:disabled"/>
   <int value="765803208" label="AutofillShowTypePredictions:enabled"/>
   <int value="766898398" label="sampling-heap-profiler"/>