Fixing compilation failure in peerconnection_jni.cc with WEBRTC_CHROMIUM_BUILD.
Fixing compilation failure in peerconnection_jni.cc with WEBRTC_CHROMIUM_BUILD.

Symbol LogcatTraceContext not defined.
Submitting on behalf of serya@.
Dup of https://webrtc-codereview.appspot.com/29529004/

TEST=Build target libjingle_peerconnection_javalib with applied CL https://codereview.chromium.org/551793003/
BUG=https://crbug.com/383418
R=serya@chromium.org

Review URL: https://webrtc-codereview.appspot.com/28529004

Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: e65812427db6609f4327dabc5336a9d07d7a182d

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