import org.chromium.chrome.browser.identity.UuidBasedUniqueIdentificationGenerator; //导入依赖的package包/类
/**
 * Called during early init to make this InvalidationClientNameGenerator the default.
 *
 * This should be called very early during initialization to setup the invalidaiton client name.
 */
public static void doInitializeAndInstallGenerator(Context context) {
    UniqueIdentificationGenerator idGenerator =
            new UuidBasedUniqueIdentificationGenerator(context, INVALIDATIONS_UUID_PREF_KEY);
    InvalidationClientNameGenerator clientNameGenerator =
            new UniqueIdInvalidationClientNameGenerator(idGenerator);
    InvalidationClientNameProvider.get().setPreferredClientNameGenerator(clientNameGenerator);
}
 

import org.chromium.chrome.browser.identity.UuidBasedUniqueIdentificationGenerator; //导入依赖的package包/类
/**
 * 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();
    super.onCreate();
    UiUtils.setKeyboardShowingDelegate(new UiUtils.KeyboardShowingDelegate() {
        @Override
        public boolean disableKeyboardCheck(Context context, View view) {
            Activity activity = null;
            if (context instanceof Activity) {
                activity = (Activity) context;
            } else if (view != null && view.getContext() instanceof Activity) {
                activity = (Activity) view.getContext();
            }

            // For multiwindow mode we do not track keyboard visibility.
            return activity != null && MultiWindowUtils.getInstance().isMultiWindow(activity);
        }
    });

    // Initialize the AccountManagerHelper with the correct AccountManagerDelegate. Must be done
    // only once and before AccountMangerHelper.get(...) is called to avoid using the
    // default AccountManagerDelegate.
    AccountManagerHelper.initializeAccountManagerHelper(this, createAccountManagerDelegate());

    // Set the unique identification generator for invalidations.  The
    // invalidations system can start and attempt to fetch the client ID
    // very early.  We need this generator to be ready before that happens.
    UniqueIdInvalidationClientNameGenerator.doInitializeAndInstallGenerator(this);

    // Set minimum Tango log level. This sets an in-memory static field, and needs to be
    // set in the ApplicationContext instead of an activity, since Tango can be woken up
    // by the system directly though messages from GCM.
    AndroidLogger.setMinimumAndroidLogLevel(Log.WARN);

    // Set up the identification generator for sync. The ID is actually generated
    // in the SyncController constructor.
    UniqueIdentificationGeneratorFactory.registerGenerator(SyncController.GENERATOR_ID,
            new UuidBasedUniqueIdentificationGenerator(this, SESSIONS_UUID_PREF_KEY), false);
}
 

import org.chromium.chrome.browser.identity.UuidBasedUniqueIdentificationGenerator; //导入依赖的package包/类
private void setupSessionSyncId() {
    // Ensure that sync uses the correct UniqueIdentificationGenerator, but do not force the
    // registration, in case a test case has already overridden it.
    UuidBasedUniqueIdentificationGenerator generator =
            new UuidBasedUniqueIdentificationGenerator(mContext, SESSIONS_UUID_PREF_KEY);
    UniqueIdentificationGeneratorFactory.registerGenerator(
            UuidBasedUniqueIdentificationGenerator.GENERATOR_ID, generator, false);
    // Since we do not override the UniqueIdentificationGenerator, we get it from the factory,
    // instead of using the instance we just created.
    mProfileSyncService.setSessionsId(UniqueIdentificationGeneratorFactory
            .getInstance(UuidBasedUniqueIdentificationGenerator.GENERATOR_ID));
}
 

import org.chromium.chrome.browser.identity.UuidBasedUniqueIdentificationGenerator; //导入依赖的package包/类
/**
 * Performs the shared class initialization.
 */
protected void handlePreNativeInitialization() {
    ChromeApplication application = (ChromeApplication) ContextUtils.getApplicationContext();

    UiUtils.setKeyboardShowingDelegate(new UiUtils.KeyboardShowingDelegate() {
        @Override
        public boolean disableKeyboardCheck(Context context, View view) {
            Activity activity = null;
            if (context instanceof Activity) {
                activity = (Activity) context;
            } else if (view != null && view.getContext() instanceof Activity) {
                activity = (Activity) view.getContext();
            }

            // For multiwindow mode we do not track keyboard visibility.
            return activity != null
                    && MultiWindowUtils.getInstance().isLegacyMultiWindow(activity);
        }
    });

    // Initialize the AccountManagerHelper with the correct AccountManagerDelegate. Must be done
    // only once and before AccountMangerHelper.get(...) is called to avoid using the
    // default AccountManagerDelegate.
    AccountManagerHelper.initializeAccountManagerHelper(
            application, application.createAccountManagerDelegate());

    // Set the unique identification generator for invalidations.  The
    // invalidations system can start and attempt to fetch the client ID
    // very early.  We need this generator to be ready before that happens.
    UniqueIdInvalidationClientNameGenerator.doInitializeAndInstallGenerator(application);

    // Set minimum Tango log level. This sets an in-memory static field, and needs to be
    // set in the ApplicationContext instead of an activity, since Tango can be woken up
    // by the system directly though messages from GCM.
    AndroidLogger.setMinimumAndroidLogLevel(Log.WARN);

    // Set up the identification generator for sync. The ID is actually generated
    // in the SyncController constructor.
    UniqueIdentificationGeneratorFactory.registerGenerator(SyncController.GENERATOR_ID,
            new UuidBasedUniqueIdentificationGenerator(
                    application, SESSIONS_UUID_PREF_KEY), false);
}
 

import org.chromium.chrome.browser.identity.UuidBasedUniqueIdentificationGenerator; //导入依赖的package包/类
/**
 * Performs the shared class initialization.
 */
protected void handlePreNativeInitialization() {
    ChromeApplication application = (ChromeApplication) ContextUtils.getApplicationContext();

    UiUtils.setKeyboardShowingDelegate(new UiUtils.KeyboardShowingDelegate() {
        @Override
        public boolean disableKeyboardCheck(Context context, View view) {
            Activity activity = null;
            if (context instanceof Activity) {
                activity = (Activity) context;
            } else if (view != null && view.getContext() instanceof Activity) {
                activity = (Activity) view.getContext();
            }

            // For multiwindow mode we do not track keyboard visibility.
            return activity != null
                    && MultiWindowUtils.getInstance().isLegacyMultiWindow(activity);
        }
    });

    // Initialize the AccountManagerHelper with the correct AccountManagerDelegate. Must be done
    // only once and before AccountMangerHelper.get(...) is called to avoid using the
    // default AccountManagerDelegate.
    AccountManagerHelper.initializeAccountManagerHelper(
            AppHooks.get().createAccountManagerDelegate());

    // Set the unique identification generator for invalidations.  The
    // invalidations system can start and attempt to fetch the client ID
    // very early.  We need this generator to be ready before that happens.
    UniqueIdInvalidationClientNameGenerator.doInitializeAndInstallGenerator(application);

    // Set minimum Tango log level. This sets an in-memory static field, and needs to be
    // set in the ApplicationContext instead of an activity, since Tango can be woken up
    // by the system directly though messages from GCM.
    AndroidLogger.setMinimumAndroidLogLevel(Log.WARN);

    // Set up the identification generator for sync. The ID is actually generated
    // in the SyncController constructor.
    UniqueIdentificationGeneratorFactory.registerGenerator(SyncController.GENERATOR_ID,
            new UuidBasedUniqueIdentificationGenerator(
                    application, SESSIONS_UUID_PREF_KEY), false);

    // Indicate that we can use the GMS location provider.
    LocationProviderFactory.useGmsCoreLocationProvider();
}