[Android WebView] Implement support for Network Information API and enable it.

android_webview/glue/java/src/com/android/webview/chromium/WebViewChromiumFactoryProvider.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 com.android.webview.chromium;
 
+import android.Manifest;
 import android.app.ActivityManager;
 import android.content.ComponentCallbacks2;
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
 import android.net.Uri;
 import android.os.Build;
 import android.os.Looper;
+import android.os.Process;
 import android.os.StrictMode;
 import android.util.Log;
 import android.webkit.CookieManager;
 import android.webkit.GeolocationPermissions;
 import android.webkit.WebStorage;
 import android.webkit.WebView;
 import android.webkit.WebViewDatabase;
 import android.webkit.WebViewFactory;
 import android.webkit.WebViewFactoryProvider;
 import android.webkit.WebViewProvider;
 
 import com.android.webview.chromium.WebViewDelegateFactory.WebViewDelegate;
 
 import org.chromium.android_webview.AwBrowserContext;
 import org.chromium.android_webview.AwBrowserProcess;
 import org.chromium.android_webview.AwContents;
 import org.chromium.android_webview.AwContentsClient;
 import org.chromium.android_webview.AwContentsStatics;
 import org.chromium.android_webview.AwCookieManager;
 import org.chromium.android_webview.AwDataReductionProxyManager;
 import org.chromium.android_webview.AwDevToolsServer;
+import org.chromium.android_webview.AwNetworkChangeNotifierRegistrationPolicy;
 import org.chromium.android_webview.AwQuotaManagerBridge;
 import org.chromium.android_webview.AwResource;
 import org.chromium.android_webview.AwSettings;
 import org.chromium.android_webview.R;
 import org.chromium.base.CommandLine;
 import org.chromium.base.ContextUtils;
 import org.chromium.base.MemoryPressureListener;
 import org.chromium.base.PathService;
 import org.chromium.base.PathUtils;
 import org.chromium.base.ThreadUtils;
 import org.chromium.base.TraceEvent;
 import org.chromium.base.annotations.SuppressFBWarnings;
 import org.chromium.base.library_loader.LibraryLoader;
 import org.chromium.base.library_loader.LibraryProcessType;
 import org.chromium.base.library_loader.ProcessInitException;
 import org.chromium.content.browser.ContentViewStatics;
+import org.chromium.net.NetworkChangeNotifier;
 import org.chromium.ui.base.ResourceBundle;
 
 import java.io.File;
 import java.lang.ref.WeakReference;
 import java.util.ArrayList;
 
 /**
  * Entry point to the WebView. The system framework talks to this class to get instances of the
  * implementation classes.
  */
@@ skipping 101 matching lines @@
             }
         }
     }
 
     private void initPlatSupportLibrary() {
         DrawGLFunctor.setChromiumAwDrawGLFunction(AwContents.getAwDrawGLFunction());
         AwContents.setAwDrawSWFunctionTable(GraphicsUtils.getDrawSWFunctionTable());
         AwContents.setAwDrawGLFunctionTable(GraphicsUtils.getDrawGLFunctionTable());
     }
 
+    private void initNetworkChangeNotifier(Context applicationContext) {
+        if (applicationContext.checkPermission(Manifest.permission.ACCESS_NETWORK_STATE,
+                Process.myPid(), Process.myUid()) == PackageManager.PERMISSION_GRANTED) {
+            NetworkChangeNotifier.init(applicationContext);
+            NetworkChangeNotifier.setAutoDetectConnectivityState(
+                    new AwNetworkChangeNotifierRegistrationPolicy());
+        }
+    }
+
     private void ensureChromiumStartedLocked(boolean onMainThread) {
         assert Thread.holdsLock(mLock);
 
         if (mStarted) { // Early-out for the common case.
             return;
         }
 
         Looper looper = !onMainThread ? Looper.myLooper() : Looper.getMainLooper();
         Log.v(TAG, "Binding Chromium to "
                         + (Looper.getMainLooper().equals(looper) ? "main" : "background")
@@ skipping 50 matching lines @@
         }
 
         PathService.override(PathService.DIR_MODULE, "/system/lib/");
         PathService.override(DIR_RESOURCE_PAKS_ANDROID, "/system/framework/webview/paks");
 
         // Make sure that ResourceProvider is initialized before starting the browser process.
         final String webViewPackageName = WebViewFactory.getLoadedPackageInfo().packageName;
         setUpResources(webViewPackageName, context);
         ResourceBundle.initializeLocalePaks(context, R.array.locale_paks);
         initPlatSupportLibrary();
+        initNetworkChangeNotifier(context);
         final int extraBindFlags = 0;
         AwBrowserProcess.configureChildProcessLauncher(webViewPackageName, extraBindFlags);
         AwBrowserProcess.start(context);
 
         if (isBuildDebuggable()) {
             setWebContentsDebuggingEnabled(true);
         }
 
         TraceEvent.setATraceEnabled(mWebViewDelegate.isTraceTagEnabled());
         mWebViewDelegate.setOnTraceEnabledChangeListener(
@@ skipping 203 matching lines @@
                         browserContext.getHttpAuthDatabase(context));
             }
         }
         return mWebViewDatabase;
     }
 
     WebViewDelegate getWebViewDelegate() {
         return mWebViewDelegate;
     }
 }