Add Feature tag to all ImportantSite tests

This will allow users to exclusively run or ignore
all ImportantSite tests at once.

BUG=None

Review-Url: https://codereview.chromium.org/2392303006
Cr-Commit-Position: refs/heads/master@{#423876}

chrome/android/javatests/src/org/chromium/chrome/browser/preferences/privacy/ClearBrowsingDataPreferencesTest.java

@@ -19,6 +19,7 @@ import android.widget.ListView;
 
 import org.chromium.base.ThreadUtils;
 import org.chromium.base.test.util.CommandLineFlags;
+import org.chromium.base.test.util.Feature;
 import org.chromium.base.test.util.RetryOnFailure;
 import org.chromium.chrome.browser.ChromeActivity;
 import org.chromium.chrome.browser.ChromeFeatureList;
@@ -524,6 +525,7 @@ public class ClearBrowsingDataPreferencesTest
      */
     @CommandLineFlags.Add({"enable-features=ImportantSitesInCBD", "enable-site-engagement"})
     @MediumTest
+    @Feature({"SiteEngagement"})
     public void testImportantSitesDialogNoFiltering() throws Exception {
         // Sign in.
         SigninTestUtil.addAndSignInTestAccount();
@@ -570,6 +572,7 @@ public class ClearBrowsingDataPreferencesTest
      */
     @CommandLineFlags.Add({"enable-features=ImportantSitesInCBD", "enable-site-engagement"})
     @MediumTest
+    @Feature({"SiteEngagement"})
     public void testImportantSitesDialogNoopOnCancel() throws Exception {
         // Sign in.
         SigninTestUtil.addAndSignInTestAccount();
@@ -608,6 +611,7 @@ public class ClearBrowsingDataPreferencesTest
      */
     @CommandLineFlags.Add({"enable-features=ImportantSitesInCBD", "enable-site-engagement"})
     @MediumTest
+    @Feature({"SiteEngagement"})
     public void testImportantSitesDialog() throws Exception {
         // Sign in.
         SigninTestUtil.addAndSignInTestAccount();

chrome/android/javatests/src/org/chromium/chrome/browser/preferences/website/ManageSpaceActivityTest.java

@@ -14,6 +14,7 @@ import android.test.suitebuilder.annotation.SmallTest;
 
 import org.chromium.base.ThreadUtils;
 import org.chromium.base.test.util.CommandLineFlags;
+import org.chromium.base.test.util.Feature;
 import org.chromium.base.test.util.MinAndroidSdkLevel;
 import org.chromium.base.test.util.RetryOnFailure;
 import org.chromium.chrome.browser.ChromeActivity;
@@ -109,6 +110,7 @@ public class ManageSpaceActivityTest extends ChromeActivityTestCaseBase<ChromeAc
 
     @MediumTest
     @RetryOnFailure
+    @Feature({"SiteEngagement"})
     public void testClearUnimportantOnly() throws Exception {
         final String cookiesUrl =
                 mTestServer.getURL("/chrome/test/data/android/storage_persistance.html");
@@ -144,6 +146,7 @@ public class ManageSpaceActivityTest extends ChromeActivityTestCaseBase<ChromeAc
     }
 
     @MediumTest
+    @Feature({"SiteEngagement"})
     public void testClearUnimporantWithoutChromeStart() throws Exception {
         ManageSpaceActivity manageSpaceActivity = startManageSpaceActivity();
         // Click 'clear' in the CBD screen.