Add a Preference to allow WebRTC only bind to "any address" (all 0s)

content/renderer/media/rtc_peer_connection_handler.cc

Index: content/renderer/media/rtc_peer_connection_handler.cc
diff --git a/content/renderer/media/rtc_peer_connection_handler.cc b/content/renderer/media/rtc_peer_connection_handler.cc
index da93384f6a889aea18abf7a71153f7c2f97882ab..922a06438d6c996ff68643f62334978fc305ab41 100644
--- a/content/renderer/media/rtc_peer_connection_handler.cc
+++ b/content/renderer/media/rtc_peer_connection_handler.cc
@@ -30,6 +30,7 @@
 #include "content/renderer/media/webrtc_audio_device_impl.h"
 #include "content/renderer/media/webrtc_uma_histograms.h"
 #include "content/renderer/render_thread_impl.h"
+#include "content/renderer/render_view_impl.h"
 #include "third_party/WebKit/public/platform/WebMediaConstraints.h"
 #include "third_party/WebKit/public/platform/WebRTCConfiguration.h"
 #include "third_party/WebKit/public/platform/WebRTCDataChannelInit.h"
@@ -39,6 +40,7 @@
 #include "third_party/WebKit/public/platform/WebRTCSessionDescriptionRequest.h"
 #include "third_party/WebKit/public/platform/WebRTCVoidRequest.h"
 #include "third_party/WebKit/public/platform/WebURL.h"
+#include "third_party/WebKit/public/web/WebFrame.h"
 
 using webrtc::DataChannelInterface;
 using webrtc::IceCandidateInterface;
@@ -736,6 +738,15 @@ void RTCPeerConnectionHandler::associateWithFrame(blink::WebFrame* frame) {
   DCHECK(thread_checker_.CalledOnValidThread());
   DCHECK(frame);
   frame_ = frame;
+
+  // Copy the flag from Preference associated with this WebFrame.
+  RenderViewImpl* renderer_view_impl =
+      RenderViewImpl::FromWebView(frame_->view());
+  if (renderer_view_impl && dependency_factory_) {
+    dependency_factory_->set_disable_multiple_routes(
+        renderer_view_impl->renderer_preferences()
+            .disable_webrtc_multiple_routes);
+  }
 }
 
 bool RTCPeerConnectionHandler::initialize(