Add ChromeStartupDelegate feature flag

Add feature flag for enabling ChromeStartupDelegate, to be used
downstream.

Bug: 1143402
Change-Id: I12a56e7927d204efd4f1f487e3256b30d487f5f7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2523359Reviewed-by: Theresa  <twellington@chromium.org>
Commit-Queue: Natalie Chouinard <chouinard@chromium.org>
Cr-Commit-Position: refs/heads/master@{#825029}

chrome/browser/flags/android/chrome_feature_list.cc

@@ -385,6 +385,9 @@ const base::Feature kChromeSharingHub{"ChromeSharingHub",
 const base::Feature kChromeSharingHubV15{"ChromeSharingHubV15",
                                          base::FEATURE_DISABLED_BY_DEFAULT};
 
+const base::Feature kChromeStartupDelegate{"ChromeStartupDelegate",
+                                           base::FEATURE_DISABLED_BY_DEFAULT};
+
 const base::Feature kCommandLineOnNonRooted{"CommandLineOnNonRooted",
                                             base::FEATURE_DISABLED_BY_DEFAULT};
 

chrome/browser/flags/android/chrome_feature_list.h

@@ -43,6 +43,7 @@ extern const base::Feature kChromeShareQRCode;
 extern const base::Feature kChromeShareScreenshot;
 extern const base::Feature kChromeSharingHub;
 extern const base::Feature kChromeSharingHubV15;
+extern const base::Feature kChromeStartupDelegate;
 extern const base::Feature kCommandLineOnNonRooted;
 extern const base::Feature kConditionalTabStripAndroid;
 extern const base::Feature kContextMenuEnableLensShoppingAllowlist;

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

@@ -242,6 +242,7 @@ public abstract class ChromeFeatureList {
     public static final String CHROME_SHARE_SCREENSHOT = "ChromeShareScreenshot";
     public static final String CHROME_SHARING_HUB = "ChromeSharingHub";
     public static final String CHROME_SHARING_HUB_V15 = "ChromeSharingHubV15";
+    public static final String CHROME_STARTUP_DELEGATE = "ChromeStartupDelegate";
     public static final String CLEAR_OLD_BROWSING_DATA = "ClearOldBrowsingData";
     public static final String COMMAND_LINE_ON_NON_ROOTED = "CommandLineOnNonRooted";
     public static final String CONDITIONAL_TAB_STRIP_ANDROID = "ConditionalTabStripAndroid";