Fix/suppress new warnings introduced in Chromium roll.

TBR=henrika@webrtc.org

Bug: webrtc:6597
Change-Id: Id26945a7be05250673b58de8220f78bc62886688
Reviewed-on: https://webrtc-review.googlesource.com/16860
Commit-Queue: Sami Kalliomäki <sakal@webrtc.org>
Reviewed-by: Magnus Jedvert <magjed@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#20477}

sdk/android/src/java/org/webrtc/EglBase14.java

@@ -24,6 +24,7 @@ import android.view.Surface;
  * Holds EGL state and utility methods for handling an EGL14 EGLContext, an EGLDisplay,
  * and an EGLSurface.
  */
+@SuppressWarnings("ReferenceEquality") // We want to compare to EGL14 constants.
 @TargetApi(18)
 class EglBase14 extends EglBase {
   private static final String TAG = "EglBase14";