Add a dialog UI for Data Use accounting

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

 // Copyright 2015 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 org.chromium.base.VisibleForTesting;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.ChromeActivity;
 import org.chromium.chrome.browser.ChromeApplication;
+import org.chromium.chrome.browser.datausage.DataUseTabUIManager;
 import org.chromium.chrome.browser.externalnav.ExternalNavigationHandler;
 import org.chromium.chrome.browser.externalnav.ExternalNavigationHandler.OverrideUrlLoadingResult;
 import org.chromium.chrome.browser.externalnav.ExternalNavigationParams;
 import org.chromium.chrome.browser.tabmodel.TabModel.TabLaunchType;
 import org.chromium.components.navigation_interception.InterceptNavigationDelegate;
 import org.chromium.components.navigation_interception.NavigationParams;
 import org.chromium.content_public.browser.NavigationController;
 import org.chromium.content_public.browser.WebContents;
 import org.chromium.content_public.common.ConsoleMessageLevel;
 
 /**
  * Class that controls navigations and allows to intercept them. It is used on Android to 'convert'
- * certain navigations to Intents to 3rd party applications.
+ * certain navigations to Intents to 3rd party applications and to "pause" navigations when data use
+ * tracking has ended.
  */
 public class InterceptNavigationDelegateImpl implements InterceptNavigationDelegate {
     private final ChromeActivity mActivity;
     private final Tab mTab;
     private final ExternalNavigationHandler mExternalNavHandler;
     private final AuthenticatorNavigationInterceptor mAuthenticatorHelper;
     private ExternalNavigationHandler.OverrideUrlLoadingResult mLastOverrideUrlLoadingResult =
             ExternalNavigationHandler.OverrideUrlLoadingResult.NO_OVERRIDE;
 
     /**
@@ skipping 65 matching lines @@
                 .setTab(mTab)
                 .setApplicationMustBeInForeground(true)
                 .setRedirectHandler(tabRedirectHandler)
                 .setOpenInNewTab(shouldCloseTab)
                 .setIsBackgroundTabNavigation(mTab.isHidden() && !isInitialTabLaunchInBackground)
                 .setIsMainFrame(navigationParams.isMainFrame)
                 .setHasUserGesture(navigationParams.hasUserGesture)
                 .setShouldCloseContentsOnOverrideUrlLoadingAndLaunchIntent(shouldCloseTab
                         && navigationParams.isMainFrame)
                 .build();
-        ExternalNavigationHandler.OverrideUrlLoadingResult result =
-                mExternalNavHandler.shouldOverrideUrlLoading(params);
+        OverrideUrlLoadingResult result = mExternalNavHandler.shouldOverrideUrlLoading(params);
         mLastOverrideUrlLoadingResult = result;
         switch (result) {
             case OVERRIDE_WITH_EXTERNAL_INTENT:
                 assert mExternalNavHandler.canExternalAppHandleUrl(url);
                 if (navigationParams.isMainFrame) {
                     onOverrideUrlLoadingAndLaunchIntent();
                 }
                 return true;
             case OVERRIDE_WITH_CLOBBERING_TAB:
                 mShouldClearRedirectHistoryForTabClobbering = true;
                 return true;
             case OVERRIDE_WITH_ASYNC_ACTION:
                 if (!shouldCloseTab && navigationParams.isMainFrame) {
                     onOverrideUrlLoadingAndLaunchIntent();
                 }
                 return true;
             case NO_OVERRIDE:
             default:
                 if (navigationParams.isExternalProtocol) {
                     logBlockedNavigationToDevToolsConsole(url);
                     return true;
                 }
-                return false;
+                return DataUseTabUIManager.shouldOverrideUrlLoading(mActivity, mTab, url,
+                        navigationParams.pageTransitionType, navigationParams.referrer);
         }
     }
 
     /**
      * Updates navigation history if navigation is canceled due to intent handler. We go back to the
      * last committed entry index which was saved before the navigation, and remove the empty
      * entries from the navigation history. See crbug.com/426679
      */
     public void maybeUpdateNavigationHistory() {
         WebContents webContents = mTab.getWebContents();
@@ skipping 81 matching lines @@
     }
 
     private void logBlockedNavigationToDevToolsConsole(String url) {
         int resId = mExternalNavHandler.canExternalAppHandleUrl(url)
                 ? R.string.blocked_navigation_warning
                 : R.string.unreachable_navigation_warning;
         mTab.getWebContents().addMessageToDevToolsConsole(
                 ConsoleMessageLevel.WARNING, mTab.getApplicationContext().getString(resId, url));
     }
 }