[chrome.displaySource] Move mojo interfaces to a nested namespace.

extensions/browser/api/display_source/wifi_display/wifi_display_media_service_impl.cc

Index: extensions/browser/api/display_source/wifi_display/wifi_display_media_service_impl.cc
diff --git a/extensions/browser/api/display_source/wifi_display/wifi_display_media_service_impl.cc b/extensions/browser/api/display_source/wifi_display/wifi_display_media_service_impl.cc
index d220204a1b36a96dc7da57323c340922b2abe220..a11a6ce0eedff675ab5183924dd657c9cd8df180 100644
--- a/extensions/browser/api/display_source/wifi_display/wifi_display_media_service_impl.cc
+++ b/extensions/browser/api/display_source/wifi_display/wifi_display_media_service_impl.cc
@@ -41,7 +41,7 @@ WiFiDisplayMediaServiceImpl::PacketIOBuffer::~PacketIOBuffer() {
 
 // static
 void WiFiDisplayMediaServiceImpl::Create(
-    WiFiDisplayMediaServiceRequest request) {
+    mojom::WiFiDisplayMediaServiceRequest request) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
   auto* impl = new WiFiDisplayMediaServiceImpl();
   impl->binding_ =
@@ -50,7 +50,7 @@ void WiFiDisplayMediaServiceImpl::Create(
 
 // static
 void WiFiDisplayMediaServiceImpl::BindToRequest(
-    WiFiDisplayMediaServiceRequest request) {
+    mojom::WiFiDisplayMediaServiceRequest request) {
   BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
                           base::Bind(WiFiDisplayMediaServiceImpl::Create,
                                      base::Passed(std::move(request))));
@@ -88,7 +88,7 @@ void WiFiDisplayMediaServiceImpl::SetDesinationPoint(
 }
 
 void WiFiDisplayMediaServiceImpl::SendMediaPacket(
-    WiFiDisplayMediaPacketPtr packet) {
+    mojom::WiFiDisplayMediaPacketPtr packet) {
   DCHECK(rtp_socket_);
   DCHECK_CURRENTLY_ON(content::BrowserThread::IO);