Wire up chrome field trials with webrtc.

third_party/libjingle/overrides/init_webrtc.cc

Index: third_party/libjingle/overrides/init_webrtc.cc
diff --git a/third_party/libjingle/overrides/init_webrtc.cc b/third_party/libjingle/overrides/init_webrtc.cc
index eda9858f8c9b166bada6f4f95f94fbb2408457b3..5c356ab89f72fdc55e4fed5e0d544e0f0b7a069c 100644
--- a/third_party/libjingle/overrides/init_webrtc.cc
+++ b/third_party/libjingle/overrides/init_webrtc.cc
@@ -8,6 +8,7 @@
 #include "base/debug/trace_event.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
+#include "base/metrics/field_trial.h"
 #include "base/native_library.h"
 #include "base/path_service.h"
 #include "talk/base/basictypes.h"
@@ -42,6 +43,17 @@ bool InitializeWebRtcModule() {
   return true;
 }
 
+// Define webrtc:field_trial::FindFullName to provide webrtc with a field trial
+// implementation. When compiled as a static library this can be done directly
+// and without pointers to functions.
+namespace webrtc {
+namespace field_trial {
+std::string FindFullName(const std::string& trial_name) {
+  return base::FieldTrialList::FindFullName(trial_name);
+}
+}  // namespace field_trial
+}  // namespace webrtc
+
 #else  // !LIBPEERCONNECTION_LIB
 
 // When being compiled as a shared library, we need to bridge the gap between
@@ -117,6 +129,7 @@ bool InitializeWebRtcModule() {
 #if !defined(OS_MACOSX) && !defined(OS_ANDROID)
       &Allocate, &Dellocate,
 #endif
+      &base::FieldTrialList::FindFullName,
       logging::GetLogMessageHandler(),
       &GetCategoryGroupEnabled, &AddTraceEvent,
       &g_create_webrtc_media_engine, &g_destroy_webrtc_media_engine,