[NetInfo] Add MaxBandwidthChanged notification and implement on Android

net/android/javatests/src/org/chromium/net/NetworkChangeNotifierTest.java

Index: net/android/javatests/src/org/chromium/net/NetworkChangeNotifierTest.java
diff --git a/net/android/javatests/src/org/chromium/net/NetworkChangeNotifierTest.java b/net/android/javatests/src/org/chromium/net/NetworkChangeNotifierTest.java
index f4eafd9b4d40bcc6653e0a17f79bf1ae1be6e887..b9a6e057b09d1cae710e252305a0da98330c9694 100644
--- a/net/android/javatests/src/org/chromium/net/NetworkChangeNotifierTest.java
+++ b/net/android/javatests/src/org/chromium/net/NetworkChangeNotifierTest.java
@@ -7,6 +7,7 @@ package org.chromium.net;
 import android.content.Context;
 import android.content.Intent;
 import android.net.ConnectivityManager;
+import android.net.wifi.WifiManager;
 import android.telephony.TelephonyManager;
 import android.test.InstrumentationTestCase;
 import android.test.UiThreadTest;
@@ -126,6 +127,36 @@ public class NetworkChangeNotifierTest extends InstrumentationTestCase {
     }
 
     /**
+     * Tests that changing the RSSI_CHANGED_ACTION intent updates MaxBandwidth.
+     */
+    @UiThreadTest
+    @MediumTest
+    @Feature({"Android-AppBase"})
+    public void testNetworkChangeNotifierRSSIEventUpdatesMaxBandwidthForWiFi()
+            throws InterruptedException {
+        NetworkChangeNotifier notifier = NetworkChangeNotifier.getInstance();
+        mConnectivityDelegate.setNetworkType(ConnectivityManager.TYPE_WIFI);
+        mWifiDelegate.setLinkSpeedInMbps(42);
+        Intent intent = new Intent(WifiManager.RSSI_CHANGED_ACTION);
+        mReceiver.onReceive(getInstrumentation().getTargetContext(), intent);
+        assertEquals(42.0, notifier.getCurrentMaxBandwidth());
+
+        // Changing the link speed has no effect until the intent fires.
+        mWifiDelegate.setLinkSpeedInMbps(80);
+        assertEquals(42.0, notifier.getCurrentMaxBandwidth());
+
+        // Fire the intent.
+        mReceiver.onReceive(getInstrumentation().getTargetContext(), intent);
+        assertEquals(80.0, notifier.getCurrentMaxBandwidth());
+
+        // Firing a network type change intent also causes max bandwidth to update.
+        mWifiDelegate.setLinkSpeedInMbps(20);
+        intent = new Intent(ConnectivityManager.CONNECTIVITY_ACTION);
+        mReceiver.onReceive(getInstrumentation().getTargetContext(), intent);
+        assertEquals(20.0, notifier.getCurrentMaxBandwidth());
+    }
+
+    /**
      * Tests that changing the network type changes the maxBandwidth.
      */
     @UiThreadTest