Add MaxBandwidth support to Android's NetworkChangeNotifier as defined in the NetInfo spec: http://w3c.github.io/netinfo/.

* Provides an Android override for NetworkChangeNotifier::GetCurrentMaxBandwidth.

* Adds NetworkChangeNotifier::GetMaxBandwidthForConnectionSubtype and JNI to call it from Java.

* Adds java unittests

* Wifi permission is required (the permission was recently removed from content shell and tests in https://codereview.chromium.org/747553002/ as it was thought unnecessary but I'm adding it back everywhere but in cronet where it won't be used).

* Programatically copy the NetworkChangeNotifier C++ enums to Java instead of manually doing it, this requires some gyp/gn changes.

BUG=433370

Review URL: https://codereview.chromium.org/577363002

Cr-Commit-Position: refs/heads/master@{#306453}

1 files changed, 13 insertions, 0 deletions

diff --git a/net/android/network_change_notifier_android_unittest.cc b/net/android/network_change_notifier_android_unittest.cc
index 6aadb54..0818d5a 100644
--- a/net/android/network_change_notifier_android_unittest.cc
+++ b/net/android/network_change_notifier_android_unittest.cc
@@ -213,4 +213,17 @@ TEST_F(NetworkChangeNotifierAndroidTest,
             other_connection_type_observer_.notifications_count());
 }
 
+TEST_F(NetworkChangeNotifierAndroidTest, MaxBandwidth) {
+  SetOnline();
+  EXPECT_EQ(NetworkChangeNotifier::CONNECTION_UNKNOWN,
+            notifier_.GetConnectionType());
+  EXPECT_EQ(std::numeric_limits<double>::infinity(),
+            notifier_.GetMaxBandwidth());
+
+  SetOffline();
+  EXPECT_EQ(NetworkChangeNotifier::CONNECTION_NONE,
+            notifier_.GetConnectionType());
+  EXPECT_EQ(0.0, notifier_.GetMaxBandwidth());
+}
+
 }  // namespace net