Expose restartIce in SDK for Android.

PC.restartIce() is part of perfect negotiation algorithm.

Bug: webrtc:12609
Change-Id: I21a0f8637e92e13ee2653ef477d0cd22a32bf9c6
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/212645
Reviewed-by: Tommi <tommi@webrtc.org>
Commit-Queue: Tommi <tommi@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#33589}
diff --git a/sdk/android/api/org/webrtc/PeerConnection.java b/sdk/android/api/org/webrtc/PeerConnection.java
index 920e2f1..030b3a7 100644
--- a/sdk/android/api/org/webrtc/PeerConnection.java
+++ b/sdk/android/api/org/webrtc/PeerConnection.java
@@ -867,6 +867,13 @@
   }
 
   /**
+   * Tells the PeerConnection that ICE should be restarted.
+   */
+  public void restartIce() {
+    nativeRestartIce();
+  }
+
+  /**
    * Enables/disables playout of received audio streams. Enabled by default.
    *
    * Note that even if playout is enabled, streams will only be played out if
@@ -1242,6 +1249,7 @@
   private native void nativeCreateAnswer(SdpObserver observer, MediaConstraints constraints);
   private native void nativeSetLocalDescription(SdpObserver observer, SessionDescription sdp);
   private native void nativeSetRemoteDescription(SdpObserver observer, SessionDescription sdp);
+  private native void nativeRestartIce();
   private native void nativeSetAudioPlayout(boolean playout);
   private native void nativeSetAudioRecording(boolean recording);
   private native boolean nativeSetBitrate(Integer min, Integer current, Integer max);
diff --git a/sdk/android/src/jni/pc/peer_connection.cc b/sdk/android/src/jni/pc/peer_connection.cc
index 6706782..caa8864 100644
--- a/sdk/android/src/jni/pc/peer_connection.cc
+++ b/sdk/android/src/jni/pc/peer_connection.cc
@@ -588,6 +588,11 @@
       observer, JavaToNativeSessionDescription(jni, j_sdp).release());
 }
 
+static void JNI_PeerConnection_RestartIce(JNIEnv* jni,
+                                          const JavaParamRef<jobject>& j_pc) {
+  ExtractNativePC(jni, j_pc)->RestartIce();
+}
+
 static void JNI_PeerConnection_SetAudioPlayout(
     JNIEnv* jni,
     const JavaParamRef<jobject>& j_pc,