Fixing compilation failure in with WEBRTC_CHROMIUM_BUILD.

Symbol LogcatTraceContext not defined.
Submitting on behalf of serya@.
Dup of

TEST=Build target libjingle_peerconnection_javalib with applied CL

Review URL:

git-svn-id: 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/talk/app/webrtc/java/jni/ b/talk/app/webrtc/java/jni/
index e0207e4..ba54071 100644
--- a/talk/app/webrtc/java/jni/
+++ b/talk/app/webrtc/java/jni/
@@ -2686,12 +2686,12 @@
   std::string path = JavaToStdString(jni, j_path);
   if (nativeLevels != webrtc::kTraceNone) {
-#ifdef ANDROID
+#if defined(ANDROID) && !defined(WEBRTC_CHROMIUM_BUILD)
     if (path != "logcat:") {
       CHECK_EQ(0, webrtc::Trace::SetTraceFile(path.c_str(), false))
           << "SetTraceFile failed";
-#ifdef ANDROID
+#if defined(ANDROID) && !defined(WEBRTC_CHROMIUM_BUILD)
     } else {
       // Intentionally leak this to avoid needing to reason about its lifecycle.
       // It keeps no state and functions only as a dispatch point.