Removing the dependency on //third_party/webrtc:webrtc and replacing with rtc_base.

remoting/BUILD.gn

Index: remoting/BUILD.gn
diff --git a/remoting/BUILD.gn b/remoting/BUILD.gn
index 646b78787bec473955fdbc8bc9ba808be144bcad..7912dd2c3f7d20e8366a871b30848276a9e8f877 100644
--- a/remoting/BUILD.gn
+++ b/remoting/BUILD.gn
@@ -140,6 +140,7 @@ test("remoting_unittests") {
   deps = [
     ":test_support",
     "//base",
+    "//base/test:test_support",
     "//google_apis",
     "//remoting/base:unit_tests",
     "//remoting/client:unit_tests",
@@ -148,7 +149,6 @@ test("remoting_unittests") {
     "//remoting/test:unit_tests",
     "//testing/gmock",
     "//testing/gtest",
-    "//third_party/webrtc",
   ]
 
   if (enable_remoting_host) {