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

android_webview/glue/java/src/com/android/webview/chromium/WebViewChromiumFactoryProvider.java

Index: android_webview/glue/java/src/com/android/webview/chromium/WebViewChromiumFactoryProvider.java
diff --git a/android_webview/glue/java/src/com/android/webview/chromium/WebViewChromiumFactoryProvider.java b/android_webview/glue/java/src/com/android/webview/chromium/WebViewChromiumFactoryProvider.java
index 13a9b0fd3e663c392200019121fbeca7ab63e8a3..8770d3a777725d80ca9e4cd8be905d9fa0410ee8 100644
--- a/android_webview/glue/java/src/com/android/webview/chromium/WebViewChromiumFactoryProvider.java
+++ b/android_webview/glue/java/src/com/android/webview/chromium/WebViewChromiumFactoryProvider.java
@@ -4,15 +4,18 @@
 
 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;
@@ -34,6 +37,7 @@ 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;
@@ -50,6 +54,7 @@ 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;
@@ -171,6 +176,15 @@ public class WebViewChromiumFactoryProvider implements WebViewFactoryProvider {
         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);
 
@@ -241,6 +255,7 @@ public class WebViewChromiumFactoryProvider implements WebViewFactoryProvider {
         setUpResources(webViewPackageName, context);
         ResourceBundle.initializeLocalePaks(context, R.array.locale_paks);
         initPlatSupportLibrary();
+        initNetworkChangeNotifier(context);
         final int extraBindFlags = 0;
         AwBrowserProcess.configureChildProcessLauncher(webViewPackageName, extraBindFlags);
         AwBrowserProcess.start(context);