import org.chromium.content.app.ContentApplication; //导入依赖的package包/类
private void preInflationStartup() {
    ThreadUtils.assertOnUiThread();
    if (mPreInflationStartupComplete) return;
    PathUtils.setPrivateDataDirectorySuffix(PRIVATE_DATA_DIRECTORY_SUFFIX);

    // Ensure critical files are available, so they aren't blocked on the file-system
    // behind long-running accesses in next phase.
    // Don't do any large file access here!
    ContentApplication.initCommandLine(mApplication);
    waitForDebuggerIfNeeded();
    ChromeStrictMode.configureStrictMode();
    ChromeWebApkHost.init();

    warmUpSharedPrefs();

    DeviceUtils.addDeviceSpecificUserAgentSwitch(mApplication);
    ApplicationStatus.registerStateListenerForAllActivities(
            createActivityStateListener());

    mPreInflationStartupComplete = true;
}
 

import org.chromium.content.app.ContentApplication; //导入依赖的package包/类
@Override
public boolean onCreate() {
    ContentApplication.initCommandLine(getContext());

    BrowserStartupController.get(getContext(), LibraryProcessType.PROCESS_BROWSER)
            .addStartupCompletedObserver(
                    new BrowserStartupController.StartupCallback() {
                        @Override
                        public void onSuccess(boolean alreadyStarted) {
                            ensureNativeSideInitialized();
                        }

                        @Override
                        public void onFailure() {
                        }
                    });

    return true;
}
 

import org.chromium.content.app.ContentApplication; //导入依赖的package包/类
/**
 * Enable fullscreen related startup flags.
 * @param resources Resources to use while calculating initialization constants.
 * @param resControlContainerHeight The resource id for the height of the browser controls.
 */
public static void enableFullscreenFlags(
        Resources resources, Context context, int resControlContainerHeight) {
    ContentApplication.initCommandLine(context);

    CommandLine commandLine = CommandLine.getInstance();
    if (commandLine.hasSwitch(ChromeSwitches.DISABLE_FULLSCREEN)) return;

    TypedValue threshold = new TypedValue();
    resources.getValue(R.dimen.top_controls_show_threshold, threshold, true);
    commandLine.appendSwitchWithValue(
            ContentSwitches.TOP_CONTROLS_SHOW_THRESHOLD, threshold.coerceToString().toString());
    resources.getValue(R.dimen.top_controls_hide_threshold, threshold, true);
    Log.w("renshuai: ", "hello" + threshold.coerceToString().toString());
    commandLine.appendSwitchWithValue(
            ContentSwitches.TOP_CONTROLS_HIDE_THRESHOLD, threshold.coerceToString().toString());

}
 

import org.chromium.content.app.ContentApplication; //导入依赖的package包/类
private void preInflationStartup() {
    ThreadUtils.assertOnUiThread();
    if (mPreInflationStartupComplete) return;

    // Ensure critical files are available, so they aren't blocked on the file-system
    // behind long-running accesses in next phase.
    // Don't do any large file access here!
    ContentApplication.initCommandLine(mApplication);
    waitForDebuggerIfNeeded();
    configureStrictMode();

    // Warm up the shared prefs stored.
    PreferenceManager.getDefaultSharedPreferences(mApplication);

    DeviceUtils.addDeviceSpecificUserAgentSwitch(mApplication);

    mPreInflationStartupComplete = true;
}
 

import org.chromium.content.app.ContentApplication; //导入依赖的package包/类
@Override
public boolean onCreate() {
    ContentApplication.initCommandLine(getContext());

    BrowserStartupController.get(getContext(), LibraryProcessType.PROCESS_BROWSER)
            .addStartupCompletedObserver(
                    new BrowserStartupController.StartupCallback() {
                        @Override
                        public void onSuccess(boolean alreadyStarted) {
                            ensureNativeSideInitialized();
                        }

                        @Override
                        public void onFailure() {
                        }
                    });

    // Pre-load shared preferences object, this happens on a separate thread
    PreferenceManager.getDefaultSharedPreferences(getContext());
    return true;
}
 

import org.chromium.content.app.ContentApplication; //导入依赖的package包/类
/**
 * Enable fullscreen related startup flags.
 * @param resources Resources to use while calculating initialization constants.
 * @param resControlContainerHeight The resource id for the height of the top controls.
 */
public static void enableFullscreenFlags(
        Resources resources, Context context, int resControlContainerHeight) {
    ContentApplication.initCommandLine(context);

    CommandLine commandLine = CommandLine.getInstance();
    if (commandLine.hasSwitch(ChromeSwitches.DISABLE_FULLSCREEN)) return;

    TypedValue threshold = new TypedValue();
    resources.getValue(R.dimen.top_controls_show_threshold, threshold, true);
    commandLine.appendSwitchWithValue(
            ContentSwitches.TOP_CONTROLS_SHOW_THRESHOLD, threshold.coerceToString().toString());
    resources.getValue(R.dimen.top_controls_hide_threshold, threshold, true);
    commandLine.appendSwitchWithValue(
            ContentSwitches.TOP_CONTROLS_HIDE_THRESHOLD, threshold.coerceToString().toString());
}
 

import org.chromium.content.app.ContentApplication; //导入依赖的package包/类
@Override
public boolean onCreate() {
    // Work around for broken Android versions that break the Android contract and initialize
    // ContentProviders on non-UI threads.  crbug.com/705442
    ThreadUtils.runOnUiThreadBlocking(new Runnable() {
        @Override
        public void run() {
            ContentApplication.initCommandLine(getContext());

            BrowserStartupController.get(LibraryProcessType.PROCESS_BROWSER)
                    .addStartupCompletedObserver(
                            new BrowserStartupController.StartupCallback() {
                                @Override
                                public void onSuccess(boolean alreadyStarted) {
                                    ensureNativeSideInitialized();
                                }

                                @Override
                                public void onFailure() {
                                }
                            });
        }
    });

    return true;
}
 

import org.chromium.content.app.ContentApplication; //导入依赖的package包/类
/**
 * Enable fullscreen related startup flags.
 * @param resources Resources to use while calculating initialization constants.
 * @param resControlContainerHeight The resource id for the height of the browser controls.
 */
public static void enableFullscreenFlags(
        Resources resources, Context context, int resControlContainerHeight) {
    ContentApplication.initCommandLine(context);

    CommandLine commandLine = CommandLine.getInstance();
    if (commandLine.hasSwitch(ChromeSwitches.DISABLE_FULLSCREEN)) return;

    TypedValue threshold = new TypedValue();
    resources.getValue(R.dimen.top_controls_show_threshold, threshold, true);
    commandLine.appendSwitchWithValue(
            ContentSwitches.TOP_CONTROLS_SHOW_THRESHOLD, threshold.coerceToString().toString());
    resources.getValue(R.dimen.top_controls_hide_threshold, threshold, true);
    commandLine.appendSwitchWithValue(
            ContentSwitches.TOP_CONTROLS_HIDE_THRESHOLD, threshold.coerceToString().toString());
}
 

import org.chromium.content.app.ContentApplication; //导入依赖的package包/类
/**
 * Initializes Chrome and starts the browser process if it's not running as of yet, and
 * dispatch |intent| to the NotificationUIManager once this is done.
 *
 * @param intent The intent containing the notification's information.
 */
@SuppressFBWarnings("DM_EXIT")
private void dispatchIntentOnUIThread(Intent intent) {
    Context context = getApplicationContext();
    if (!CommandLine.isInitialized()) {
        ContentApplication.initCommandLine(context);
    }

    try {
        BrowserStartupController.get(this, LibraryProcessType.PROCESS_BROWSER)
                .startBrowserProcessesSync(false);

        // Now that the browser process is initialized, we pass forward the call to the
        // Notification UI Manager which will take care of delivering the appropriate events.
        if (!NotificationUIManager.dispatchNotificationEvent(intent)) {
            Log.w(TAG, "Unable to dispatch the notification event to Chrome.");
        }

        // TODO(peter): Verify that the lifetime of the NotificationService is sufficient
        // when a notification event could be dispatched successfully.

        // TODO(peter): The native side needs to tell us when executing the event has
        // finished, so that we can forcefully stop the service.

    } catch (ProcessInitException e) {
        Log.e(TAG, "Unable to start the browser process.", e);
        System.exit(-1);
    }
}