✨ Minor cleanup of launching document tabs.

chrome/test/android/javatests/src/org/chromium/chrome/test/util/browser/tabmodel/document/MockTabDelegate.java

Index: chrome/test/android/javatests/src/org/chromium/chrome/test/util/browser/tabmodel/document/MockTabDelegate.java
diff --git a/chrome/test/android/javatests/src/org/chromium/chrome/test/util/browser/tabmodel/document/MockTabDelegate.java b/chrome/test/android/javatests/src/org/chromium/chrome/test/util/browser/tabmodel/document/MockTabDelegate.java
index 194306ba3996c3ee576fb995ff4ee7f97331c7ad..dfa7b8f202d1287694477aac51a5f359db65626e 100644
--- a/chrome/test/android/javatests/src/org/chromium/chrome/test/util/browser/tabmodel/document/MockTabDelegate.java
+++ b/chrome/test/android/javatests/src/org/chromium/chrome/test/util/browser/tabmodel/document/MockTabDelegate.java
@@ -10,7 +10,6 @@ import org.chromium.chrome.browser.tabmodel.TabModel.TabLaunchType;
 import org.chromium.chrome.browser.tabmodel.document.AsyncTabCreationParams;
 import org.chromium.chrome.browser.tabmodel.document.TabDelegate;
 import org.chromium.content_public.browser.LoadUrlParams;
-import org.chromium.content_public.browser.WebContents;
 
 /**
  * Mocks out calls to get Tabs for the DocumentTabModel.
@@ -31,12 +30,6 @@ public class MockTabDelegate extends TabDelegate {
     }
 
     @Override
-    public boolean createTabWithWebContents(
-            WebContents webContents, int parentId, TabLaunchType type, String url, int startedBy) {
-        return false;
-    }
-
-    @Override
     public Tab launchUrl(String url, TabLaunchType type) {
         return null;
     }