Gyp->GN migration of RTPjitter.

BUG=6162

NOTRY=True

Review-Url: https://codereview.webrtc.org/2196283002
Cr-Commit-Position: refs/heads/master@{#13620}

webrtc/modules/audio_coding/BUILD.gn

@@ -1344,6 +1344,17 @@ if (rtc_include_tests) {
     ]
   }
 
+  executable("RTPjitter") {
+    testonly = true
+    deps = [
+      "../..:webrtc_common",
+      "//testing/gtest",
+    ]
+    sources = [
+      "neteq/test/RTPjitter.cc",
+    ]
+  }
+
   executable("rtp_analyze") {
     testonly = true
 

webrtc/modules/audio_coding/neteq/neteq_tests.gypi

@@ -80,6 +80,7 @@
       'target_name': 'RTPjitter',
       'type': 'executable',
       'dependencies': [
+        '<(webrtc_root)/common.gyp:webrtc_common',
         '<(DEPTH)/testing/gtest.gyp:gtest',
       ],
       'sources': [