Reenabled the RtcEventLog unittests

webrtc/call/BUILD.gn

Index: webrtc/call/BUILD.gn
diff --git a/webrtc/call/BUILD.gn b/webrtc/call/BUILD.gn
index 9b2fe9ec2a0bec085eaf70245ad83b03126e0f16..05a319210a75fb73ef0df9f0ba1ea4696869c20e 100644
--- a/webrtc/call/BUILD.gn
+++ b/webrtc/call/BUILD.gn
@@ -56,4 +56,24 @@ if (rtc_include_tests) {
       suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
     }
   }
+  rtc_source_set("rtc_event_log_tests") {
+    testonly = true
+    sources = [
+      "rtc_event_log_unittest.cc",
+      "rtc_event_log_unittest_helper.cc",
+    ]
+    deps = [
+      "..:rtc_event_log",
+      "..:rtc_event_log_parser",
+      "../modules/rtp_rtcp",
+      "../system_wrappers:metrics_default",
+      "//testing/gmock",
+      "//testing/gtest",
+    ]
+    if (is_clang) {
+      # Suppress warnings from the Chromium Clang plugin.
+      # See http://code.google.com/p/webrtc/issues/detail?id=163 for details.
+      suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
+    }
+  }
 }