Add support for TraceEvent before the native library is loaded.

content/browser/browser_main_loop.cc

Index: content/browser/browser_main_loop.cc
diff --git a/content/browser/browser_main_loop.cc b/content/browser/browser_main_loop.cc
index 2a56518910a273bfb6e1e78ad57972463fd36d41..95ed89527add340b0e733d9748fcaf0b8084b8cb 100644
--- a/content/browser/browser_main_loop.cc
+++ b/content/browser/browser_main_loop.cc
@@ -1266,6 +1266,10 @@ void BrowserMainLoop::InitStartupTracing(
     delay_secs = 5;
   }
 
+#if defined(OS_ANDROID)
+  TracingControllerAndroid::SetupEarlyJavaTracing();
+#endif
+
   startup_trace_timer_.Start(FROM_HERE,
                              base::TimeDelta::FromSeconds(delay_secs),
                              this,
@@ -1274,6 +1278,7 @@ void BrowserMainLoop::InitStartupTracing(
 
 void BrowserMainLoop::EndStartupTracing() {
   is_tracing_startup_ = false;
+
   TracingController::GetInstance()->DisableRecording(
       TracingController::CreateFileSink(
           startup_trace_file_,