Remove OmahaUpdateInfoBar and related classes

chrome/android/java/src/org/chromium/chrome/browser/ChromeActivity.java

Index: chrome/android/java/src/org/chromium/chrome/browser/ChromeActivity.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ChromeActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/ChromeActivity.java
index 9e0d6bcbb052703100b12290e05255718cbceb74..3a4be6b747cbe4bb2b98d25fe6bc31b59b33cbdb 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ChromeActivity.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ChromeActivity.java
@@ -519,13 +519,11 @@ public abstract class ChromeActivity extends AsyncInitializationActivity
             @Override
             public void onLoadStopped(Tab tab, boolean toDifferentDocument) {
                 postDeferredStartupIfNeeded();
-                showUpdateInfoBarIfNecessary();
             }
 
             @Override
             public void onPageLoadFinished(Tab tab) {
                 postDeferredStartupIfNeeded();
-                showUpdateInfoBarIfNecessary();
                 OfflinePageUtils.showOfflineSnackbarIfNecessary(ChromeActivity.this, tab);
             }
 
@@ -695,7 +693,6 @@ public abstract class ChromeActivity extends AsyncInitializationActivity
             }
         });
 
-        getChromeApplication().getUpdateInfoBarHelper().checkForUpdateOnBackgroundThread(this);
         UpdateMenuItemHelper.getInstance().checkForUpdateOnBackgroundThread(this);
 
         removeSnapshotDatabase();
@@ -1012,13 +1009,6 @@ public abstract class ChromeActivity extends AsyncInitializationActivity
     }
 
     /**
-     * @return Whether the update infobar may be shown.
-     */
-    public boolean mayShowUpdateInfoBar() {
-        return true;
-    }
-
-    /**
      * Add the specified tab to bookmarks or allows to edit the bookmark if the specified tab is
      * already bookmarked. If a new bookmark is added, a snackbar will be shown.
      * @param tabToBookmark The tab that needs to be bookmarked.
@@ -1524,10 +1514,6 @@ public abstract class ChromeActivity extends AsyncInitializationActivity
         }
     }
 
-    private void showUpdateInfoBarIfNecessary() {
-        getChromeApplication().getUpdateInfoBarHelper().showUpdateInfobarIfNecessary(this);
-    }
-
     /**
      * Determines whether the ContentView is currently visible and not hidden by an overlay
      * @return true if the ContentView is fully hidden by another view (i.e. the tab stack)