Remove factory methods from ChromeApplication.

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

-// Copyright 2013 The Chromium Authors. All rights reserved.
+// Copyright 2017 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;
 
-import android.app.Activity;
 import android.app.Notification;
-import android.content.Context;
 import android.content.Intent;
-import android.content.SharedPreferences;
 import android.os.Handler;
 import android.os.Looper;
-import android.os.SystemClock;
-import android.util.Log;
 
-import org.chromium.base.ActivityState;
-import org.chromium.base.ApplicationStatus;
-import org.chromium.base.CommandLineInitUtil;
 import org.chromium.base.ContextUtils;
-import org.chromium.base.ThreadUtils;
-import org.chromium.base.TraceEvent;
-import org.chromium.base.annotations.CalledByNative;
-import org.chromium.base.annotations.MainDex;
-import org.chromium.base.annotations.SuppressFBWarnings;
-import org.chromium.base.library_loader.ProcessInitException;
 import org.chromium.chrome.browser.banners.AppDetailsDelegate;
 import org.chromium.chrome.browser.customtabs.CustomTabsConnection;
 import org.chromium.chrome.browser.datausage.ExternalDataUseObserver;
-import org.chromium.chrome.browser.document.DocumentActivity;
-import org.chromium.chrome.browser.document.IncognitoDocumentActivity;
 import org.chromium.chrome.browser.externalauth.ExternalAuthUtils;
 import org.chromium.chrome.browser.feedback.EmptyFeedbackReporter;
 import org.chromium.chrome.browser.feedback.FeedbackReporter;
 import org.chromium.chrome.browser.gsa.GSAHelper;
 import org.chromium.chrome.browser.help.HelpAndFeedback;
 import org.chromium.chrome.browser.historyreport.AppIndexingReporter;
-import org.chromium.chrome.browser.init.InvalidStartupDialog;
+import org.chromium.chrome.browser.init.ProcessInitializationHandler;
 import org.chromium.chrome.browser.instantapps.InstantAppsHandler;
 import org.chromium.chrome.browser.locale.LocaleManager;
 import org.chromium.chrome.browser.media.VideoPersister;
-import org.chromium.chrome.browser.metrics.UmaUtils;
 import org.chromium.chrome.browser.metrics.VariationsSession;
 import org.chromium.chrome.browser.multiwindow.MultiWindowUtils;
 import org.chromium.chrome.browser.net.qualityprovider.ExternalEstimateProviderAndroid;
 import org.chromium.chrome.browser.omaha.RequestGenerator;
-import org.chromium.chrome.browser.partnercustomizations.PartnerBrowserCustomizations;
 import org.chromium.chrome.browser.physicalweb.PhysicalWebBleClient;
 import org.chromium.chrome.browser.policy.PolicyAuditor;
 import org.chromium.chrome.browser.preferences.LocationSettings;
-import org.chromium.chrome.browser.preferences.PreferencesLauncher;
-import org.chromium.chrome.browser.preferences.autofill.AutofillAndPaymentsPreferences;
-import org.chromium.chrome.browser.preferences.password.SavePasswordsPreferences;
 import org.chromium.chrome.browser.rlz.RevenueStats;
 import org.chromium.chrome.browser.services.AndroidEduOwnerCheckCallback;
 import org.chromium.chrome.browser.signin.GoogleActivityController;
 import org.chromium.chrome.browser.sync.GmsCoreSyncListener;
 import org.chromium.chrome.browser.tab.AuthenticatorNavigationInterceptor;
 import org.chromium.chrome.browser.tab.Tab;
-import org.chromium.chrome.browser.tabmodel.document.ActivityDelegateImpl;
-import org.chromium.chrome.browser.tabmodel.document.DocumentTabModelSelector;
-import org.chromium.chrome.browser.tabmodel.document.StorageDelegate;
-import org.chromium.chrome.browser.tabmodel.document.TabDelegate;
 import org.chromium.chrome.browser.webapps.ChromeShortcutManager;
 import org.chromium.chrome.browser.webapps.GooglePlayWebApkInstallDelegate;
 import org.chromium.components.signin.AccountManagerDelegate;
 import org.chromium.components.signin.SystemAccountManagerDelegate;
-import org.chromium.content.app.ContentApplication;
 import org.chromium.policy.AppRestrictionsProvider;
 import org.chromium.policy.CombinedPolicyProvider;
 
 /**
- * Basic application functionality that should be shared among all browser applications that use
- * chrome layer.
+ * Base class for defining methods where different behavior is required by downstream targets.
+ * The correct version of {@link AppHooksImpl} will be determined at compile time via build rules.
+ * See http://crbug/560466.
  */
-@MainDex
-public class ChromeApplication extends ContentApplication {
-    public static final String COMMAND_LINE_FILE = "chrome-command-line";
+public abstract class AppHooks {
+    private static AppHooksImpl sInstance;
 
-    private static final String TAG = "ChromiumApplication";
-    private static final String PREF_BOOT_TIMESTAMP =
-            "com.google.android.apps.chrome.ChromeMobileApplication.BOOT_TIMESTAMP";
-    private static final long BOOT_TIMESTAMP_MARGIN_MS = 1000;
-
-    private static DocumentTabModelSelector sDocumentTabModelSelector;
-
-    @Override
-    protected void attachBaseContext(Context base) {
-        super.attachBaseContext(base);
-        ContextUtils.initApplicationContext(this);
+    public static AppHooks get() {
+        if (sInstance == null) {
+            sInstance = new AppHooksImpl();
+        }
+        return sInstance;
     }
 
     /**
-     * This is called once per ChromeApplication instance, which get created per process
-     * (browser OR renderer).  Don't stick anything in here that shouldn't be called multiple times
-     * during Chrome's lifetime.
-     */
-    @Override
-    public void onCreate() {
-        UmaUtils.recordMainEntryPointTime();
-        initCommandLine();
-        TraceEvent.maybeEnableEarlyTracing();
-        TraceEvent.begin("ChromeApplication.onCreate");
-
-        super.onCreate();
-
-        TraceEvent.end("ChromeApplication.onCreate");
-    }
-
-    /**
-     * Returns a new instance of VariationsSession.
-     */
-    public VariationsSession createVariationsSession() {
-        return new VariationsSession();
-    }
-
-    /**
-     * Return a {@link AuthenticatorNavigationInterceptor} for the given {@link Tab}.
-     * This can be null if there are no applicable interceptor to be built.
-     */
-    @SuppressWarnings("unused")
-    public AuthenticatorNavigationInterceptor createAuthenticatorNavigationInterceptor(Tab tab) {
-        return null;
-    }
-
-    /**
      * Initiate AndroidEdu device check.
      * @param callback Callback that should receive the results of the AndroidEdu device check.
      */
     public void checkIsAndroidEduDevice(final AndroidEduOwnerCheckCallback callback) {
         new Handler(Looper.getMainLooper()).post(new Runnable() {
             @Override
             public void run() {
                 callback.onSchoolCheckDone(false);
             }
         });
     }
 
-    @CalledByNative
-    protected void showAutofillSettings() {
-        PreferencesLauncher.launchSettingsPage(
-                this, AutofillAndPaymentsPreferences.class.getName());
-    }
-
-    @CalledByNative
-    protected void showPasswordSettings() {
-        PreferencesLauncher.launchSettingsPage(this,
-                SavePasswordsPreferences.class.getName());
-    }
-
-    @Override
-    public void initCommandLine() {
-        CommandLineInitUtil.initCommandLine(this, COMMAND_LINE_FILE);
+    /**
+     * Creates a new {@link AccountManagerDelegate}.
+     * @return the created {@link AccountManagerDelegate}.
+     */
+    public AccountManagerDelegate createAccountManagerDelegate() {
+        return new SystemAccountManagerDelegate(ContextUtils.getApplicationContext());
     }
 
     /**
-     * Shows an error dialog following a startup error, and then exits the application.
-     * @param e The exception reported by Chrome initialization.
+     * @return An instance of AppDetailsDelegate that can be queried about app information for the
+     *         App Banner feature.  Will be null if one is unavailable.
      */
-    public static void reportStartupErrorAndExit(final ProcessInitException e) {
-        Activity activity = ApplicationStatus.getLastTrackedFocusedActivity();
-        if (ApplicationStatus.getStateForActivity(activity) == ActivityState.DESTROYED) {
-            return;
-        }
-        InvalidStartupDialog.show(activity, e.getErrorCode());
+    public AppDetailsDelegate createAppDetailsDelegate() {
+        return null;
     }
 
     /**
-     * Returns an instance of LocationSettings to be installed as a singleton.
+     * Creates a new {@link AppIndexingReporter}.
+     * @return the created {@link AppIndexingReporter}.
      */
-    public LocationSettings createLocationSettings() {
-        // Using an anonymous subclass as the constructor is protected.
-        // This is done to deter instantiation of LocationSettings elsewhere without using the
-        // getInstance() helper method.
-        return new LocationSettings(){};
+    public AppIndexingReporter createAppIndexingReporter() {
+        return new AppIndexingReporter();
     }
 
     /**
-     * Opens the UI to clear browsing data.
-     * @param tab The tab that triggered the request.
+     * Return a {@link AuthenticatorNavigationInterceptor} for the given {@link Tab}.
+     * This can be null if there are no applicable interceptor to be built.
      */
-    @CalledByNative
-    protected void openClearBrowsingData(Tab tab) {
-        Activity activity = tab.getWindowAndroid().getActivity().get();
-        if (activity == null) {
-            Log.e(TAG,
-                    "Attempting to open clear browsing data for a tab without a valid activity");
-            return;
-        }
+    public AuthenticatorNavigationInterceptor createAuthenticatorNavigationInterceptor(Tab tab) {
+        return null;
+    }
 
-        Intent intent = PreferencesLauncher.createIntentForClearBrowsingDataPage(activity);
-        activity.startActivity(intent);
+    /** Returns the singleton instance of ChromeShortcutManager */
+    public ChromeShortcutManager createChromeShortcutManager() {
+        return new ChromeShortcutManager();
     }
 
     /**
-     * @return Whether parental controls are enabled.  Returning true will disable
-     *         incognito mode.
+     * @return An instance of {@link CustomTabsConnection}. Should not be called
+     * outside of {@link CustomTabsConnection#getInstance()}.
      */
-    @CalledByNative
-    protected boolean areParentalControlsEnabled() {
-        return PartnerBrowserCustomizations.isIncognitoDisabled();
+    public CustomTabsConnection createCustomTabsConnection() {
+        return new CustomTabsConnection(((ChromeApplication) ContextUtils.getApplicationContext()));
     }
 
     /**
-     * @return A provider of external estimates.
-     * @param nativePtr Pointer to the native ExternalEstimateProviderAndroid object.
+     * @return An instance of ExternalAuthUtils to be installed as a singleton.
      */
-    public ExternalEstimateProviderAndroid createExternalEstimateProviderAndroid(long nativePtr) {
-        return new ExternalEstimateProviderAndroid(nativePtr) {};
+    public ExternalAuthUtils createExternalAuthUtils() {
+        return new ExternalAuthUtils();
     }
 
     /**
      * @return An external observer of data use.
      * @param nativePtr Pointer to the native ExternalDataUseObserver object.
      */
     public ExternalDataUseObserver createExternalDataUseObserver(long nativePtr) {
         return new ExternalDataUseObserver(nativePtr);
     }
 
     /**
-     * @return The user agent string of Chrome.
+     * @return A provider of external estimates.
+     * @param nativePtr Pointer to the native ExternalEstimateProviderAndroid object.
      */
-    public static String getBrowserUserAgent() {
-        return nativeGetBrowserUserAgent();
+    public ExternalEstimateProviderAndroid createExternalEstimateProviderAndroid(long nativePtr) {
+        return new ExternalEstimateProviderAndroid(nativePtr) {};
     }
 
     /**
-     * The host activity should call this during its onPause() handler to ensure
-     * all state is saved when the app is suspended.  Calling ChromiumApplication.onStop() does
-     * this for you.
-     */
-    public static void flushPersistentData() {
-        try {
-            TraceEvent.begin("ChromiumApplication.flushPersistentData");
-            nativeFlushPersistentData();
-        } finally {
-            TraceEvent.end("ChromiumApplication.flushPersistentData");
-        }
-    }
-
-    /**
-     * Removes all session cookies (cookies with no expiration date) after device reboots.
-     * This function will incorrectly clear cookies when Daylight Savings Time changes the clock.
-     * Without a way to get a monotonically increasing system clock, the boot timestamp will be off
-     * by one hour.  However, this should only happen at most once when the clock changes since the
-     * updated timestamp is immediately saved.
-     */
-    public static void removeSessionCookies() {
-        long lastKnownBootTimestamp =
-                ContextUtils.getAppSharedPreferences().getLong(PREF_BOOT_TIMESTAMP, 0);
-        long bootTimestamp = System.currentTimeMillis() - SystemClock.uptimeMillis();
-        long difference = bootTimestamp - lastKnownBootTimestamp;
-
-        // Allow some leeway to account for fractions of milliseconds.
-        if (Math.abs(difference) > BOOT_TIMESTAMP_MARGIN_MS) {
-            nativeRemoveSessionCookies();
-
-            SharedPreferences prefs = ContextUtils.getAppSharedPreferences();
-            SharedPreferences.Editor editor = prefs.edit();
-            editor.putLong(PREF_BOOT_TIMESTAMP, bootTimestamp);
-            editor.apply();
-        }
-    }
-
-    private static native void nativeRemoveSessionCookies();
-    private static native String nativeGetBrowserUserAgent();
-    private static native void nativeFlushPersistentData();
-
-    /**
      * @return An instance of {@link FeedbackReporter} to report feedback.
      */
     public FeedbackReporter createFeedbackReporter() {
         return new EmptyFeedbackReporter();
     }
 
     /**
-     * @return An instance of ExternalAuthUtils to be installed as a singleton.
+     * @return An instance of GmsCoreSyncListener to notify GmsCore of sync encryption key changes.
+     *         Will be null if one is unavailable.
      */
-    public ExternalAuthUtils createExternalAuthUtils() {
-        return new ExternalAuthUtils();
+    public GmsCoreSyncListener createGmsCoreSyncListener() {
+        return null;
+    }
+
+    /**
+     * @return An instance of GoogleActivityController.
+     */
+    public GoogleActivityController createGoogleActivityController() {
+        return new GoogleActivityController();
+    }
+
+    /**
+     * @return An instance of {@link GSAHelper} that handles the start point of chrome's integration
+     *         with GSA.
+     */
+    public GSAHelper createGsaHelper() {
+        return new GSAHelper();
     }
 
     /**
      * Returns a new instance of HelpAndFeedback.
      */
     public HelpAndFeedback createHelpAndFeedback() {
         return new HelpAndFeedback();
     }
 
-    /**
-     * @return An instance of {@link CustomTabsConnection}. Should not be called
-     * outside of {@link CustomTabsConnection#getInstance()}.
-     */
-    public CustomTabsConnection createCustomTabsConnection() {
-        return new CustomTabsConnection(this);
-    }
-
-    /**
-     * @return A new {@link PhysicalWebBleClient} instance.
-     */
-    public PhysicalWebBleClient createPhysicalWebBleClient() {
-        return new PhysicalWebBleClient();
-    }
-
     public InstantAppsHandler createInstantAppsHandler() {
         return new InstantAppsHandler();
     }
 
     /**
-     * @return An instance of {@link GSAHelper} that handles the start point of chrome's integration
-     *         with GSA.
-     */
-    public GSAHelper createGsaHelper() {
-        return new GSAHelper();
-    }
-
-    /**
      * @return An instance of {@link LocaleManager} that handles customized locale related logic.
      */
     public LocaleManager createLocaleManager() {
         return new LocaleManager();
     }
 
-   /**
-     * Registers various policy providers with the policy manager.
-     * Providers are registered in increasing order of precedence so overrides should call this
-     * method in the end for this method to maintain the highest precedence.
-     * @param combinedProvider The {@link CombinedPolicyProvider} to register the providers with.
+    /**
+     * Returns an instance of LocationSettings to be installed as a singleton.
      */
-    public void registerPolicyProviders(CombinedPolicyProvider combinedProvider) {
-        combinedProvider.registerProvider(new AppRestrictionsProvider(getApplicationContext()));
+    public LocationSettings createLocationSettings() {
+        // Using an anonymous subclass as the constructor is protected.
+        // This is done to deter instantiation of LocationSettings elsewhere without using the
+        // getInstance() helper method.
+        return new LocationSettings() {};
     }
 
     /**
-     * @return An instance of PolicyAuditor that notifies the policy system of the user's activity.
-     * Only applicable when the user has a policy active, that is tracking the activity.
-     */
-    public PolicyAuditor getPolicyAuditor() {
-        // This class has a protected constructor to prevent accidental instantiation.
-        return new PolicyAuditor() {};
-    }
-
-    /**
      * @return An instance of MultiWindowUtils to be installed as a singleton.
      */
     public MultiWindowUtils createMultiWindowUtils() {
         return new MultiWindowUtils();
     }
 
     /**
-     * @return An instance of VideoPersister to be installed as a singleton.
-     */
-    public VideoPersister createVideoPersister() {
-        return new VideoPersister();
-    }
-
-    /**
      * @return An instance of RequestGenerator to be used for Omaha XML creation.  Will be null if
      *         a generator is unavailable.
      */
     public RequestGenerator createOmahaRequestGenerator() {
         return null;
     }
 
     /**
-     * @return An instance of GmsCoreSyncListener to notify GmsCore of sync encryption key changes.
-     *         Will be null if one is unavailable.
+     * @return A new {@link PhysicalWebBleClient} instance.
      */
-    public GmsCoreSyncListener createGmsCoreSyncListener() {
-        return null;
+    public PhysicalWebBleClient createPhysicalWebBleClient() {
+        return new PhysicalWebBleClient();
     }
 
     /**
-    * @return An instance of GoogleActivityController.
-    */
-    public GoogleActivityController createGoogleActivityController() {
-        return new GoogleActivityController();
-    }
-
-    /**
-     * @return An instance of AppDetailsDelegate that can be queried about app information for the
-     *         App Banner feature.  Will be null if one is unavailable.
+     * @return a new {@link ProcessInitializationHandler} instance.
      */
-    public AppDetailsDelegate createAppDetailsDelegate() {
-        return null;
-    }
-
-    /** Returns the singleton instance of GooglePlayWebApkInstallDelegate. */
-    public GooglePlayWebApkInstallDelegate getGooglePlayWebApkInstallDelegate() {
-        return null;
-    }
-
-    /** Returns the singleton instance of ChromeShortcutManager */
-    public ChromeShortcutManager createChromeShortcutManager() {
-        return new ChromeShortcutManager();
-    }
-
-    /**
-     * Returns the singleton instance of the DocumentTabModelSelector.
-     * TODO(dfalcantara): Find a better place for this once we differentiate between activity and
-     *                    application-level TabModelSelectors.
-     * @return The DocumentTabModelSelector for the application.
-     */
-    @SuppressFBWarnings("LI_LAZY_INIT_STATIC")
-    public static DocumentTabModelSelector getDocumentTabModelSelector() {
-        ThreadUtils.assertOnUiThread();
-        if (sDocumentTabModelSelector == null) {
-            ActivityDelegateImpl activityDelegate = new ActivityDelegateImpl(
-                    DocumentActivity.class, IncognitoDocumentActivity.class);
-            sDocumentTabModelSelector = new DocumentTabModelSelector(activityDelegate,
-                    new StorageDelegate(), new TabDelegate(false), new TabDelegate(true));
-        }
-        return sDocumentTabModelSelector;
+    public ProcessInitializationHandler createProcessInitializationHandler() {
+        return new ProcessInitializationHandler();
     }
 
     /**
      * @return An instance of RevenueStats to be installed as a singleton.
      */
     public RevenueStats createRevenueStatsInstance() {
         return new RevenueStats();
     }
 
     /**
-     * Creates a new {@link AccountManagerDelegate}.
-     * @return the created {@link AccountManagerDelegate}.
+     * Returns a new instance of VariationsSession.
      */
-    public AccountManagerDelegate createAccountManagerDelegate() {
-        return new SystemAccountManagerDelegate(this);
+    public VariationsSession createVariationsSession() {
+        return new VariationsSession();
     }
 
     /**
-     * Creates a new {@link AppIndexingReporter}.
-     * @return the created {@link AppIndexingReporter}.
+     * @return An instance of VideoPersister to be installed as a singleton.
      */
-    public AppIndexingReporter createAppIndexingReporter() {
-        return new AppIndexingReporter();
+    public VideoPersister createVideoPersister() {
+        return new VideoPersister();
+    }
+
+    /** Returns the singleton instance of GooglePlayWebApkInstallDelegate. */
+    public GooglePlayWebApkInstallDelegate getGooglePlayWebApkInstallDelegate() {
+        return null;
     }
 
     /**
+     * @return An instance of PolicyAuditor that notifies the policy system of the user's activity.
+     * Only applicable when the user has a policy active, that is tracking the activity.
+     */
+    public PolicyAuditor getPolicyAuditor() {
+        // This class has a protected constructor to prevent accidental instantiation.
+        return new PolicyAuditor() {};
+    }
+
+    public void registerPolicyProviders(CombinedPolicyProvider combinedProvider) {
+        combinedProvider.registerProvider(
+                new AppRestrictionsProvider(ContextUtils.getApplicationContext()));
+    }
+
+    /**
      * Starts a service from {@code intent}.  Meant to eventually be used by services that want to
      * be put into the foreground with {@code notification} via
      * {@link android.app.Service#startForeground(int, Notification)}.
      *
      * @param intent The {@link Intent} to fire to start the service.
      * @param notificationId The id of the notification to show.
      * @param notification The {@link Notification} to show.
      */
     @SuppressWarnings("Unused")
     public void startServiceWithNotification(
             Intent intent, int notificationId, Notification notification) {
         // TODO(dtrainor): Eventually make sure the service gets put into the foreground with
         // {@link android.app.Service#startForeground(int, Notification)}.
-        startService(intent);
+        ContextUtils.getApplicationContext().startService(intent);
     }
-}
+}