[Smart Lock] Auto sign-in snackbar UI.

chrome/android/java/src/org/chromium/chrome/browser/tab/Tab.java

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chrome.browser.tab;
 
 import android.app.Activity;
 import android.content.Context;
 import android.content.Intent;
 import android.content.res.Resources;
@@ skipping 36 matching lines @@
 import org.chromium.chrome.browser.contextmenu.ContextMenuPopulator;
 import org.chromium.chrome.browser.contextmenu.ContextMenuPopulatorWrapper;
 import org.chromium.chrome.browser.contextmenu.EmptyChromeContextMenuItemDelegate;
 import org.chromium.chrome.browser.fullscreen.FullscreenManager;
 import org.chromium.chrome.browser.help.HelpAndFeedback;
 import org.chromium.chrome.browser.infobar.InfoBarContainer;
 import org.chromium.chrome.browser.metrics.UmaSessionStats;
 import org.chromium.chrome.browser.metrics.UmaUtils;
 import org.chromium.chrome.browser.printing.TabPrinter;
 import org.chromium.chrome.browser.profiles.Profile;
+import org.chromium.chrome.browser.snackbar.SnackbarManager;
 import org.chromium.chrome.browser.ssl.ConnectionSecurity;
 import org.chromium.chrome.browser.ssl.ConnectionSecurityLevel;
 import org.chromium.chrome.browser.tab.TabUma.TabCreationState;
 import org.chromium.chrome.browser.tabmodel.TabModel.TabLaunchType;
 import org.chromium.chrome.browser.tabmodel.TabModel.TabSelectionType;
 import org.chromium.chrome.browser.tabmodel.TabModelBase;
 import org.chromium.chrome.browser.tabmodel.TabModelSelector;
 import org.chromium.components.navigation_interception.InterceptNavigationDelegate;
 import org.chromium.content.browser.ContentView;
 import org.chromium.content.browser.ContentViewClient;
@@ skipping 2168 matching lines @@
     /**
      * Called when the navigation entry containing the history item changed,
      * for example because of a scroll offset or form field change.
      */
     @CalledByNative
     protected void onNavEntryChanged() {
         mIsTabStateDirty = true;
     }
 
     /**
+     * Returns the SnackbarManager for the activity that owns this Tab, if any. May
+     * return null.
+     */
+    public SnackbarManager getSnackbarManager() {
+        return null;
+    }
+
+    /**
      * @return The native pointer representing the native side of this {@link Tab} object.
      */
     @CalledByNative
     private long getNativePtr() {
         return mNativeTabAndroid;
     }
 
     /** This is currently called when committing a pre-rendered page. */
     @VisibleForTesting
     @CalledByNative
@@ skipping 571 matching lines @@
     private native void nativeAttachToTabContentManager(long nativeTabAndroid,
             TabContentManager tabContentManager);
     private native void nativeAttachOverlayContentViewCore(long nativeTabAndroid,
             ContentViewCore content, boolean visible);
     private native void nativeDetachOverlayContentViewCore(long nativeTabAndroid,
             ContentViewCore content);
     private native boolean nativeHasPrerenderedUrl(long nativeTabAndroid, String url);
 
     private static native void nativeRecordStartupToCommitUma();
 }