Use CategoryFilter::kDefaultCategoryFilterString instead of "*" as the default category

content/browser/android/tracing_controller_android.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/android/tracing_controller_android.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/command_line.h"
+#include "base/debug/trace_event.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "content/browser/tracing/trace_subscriber_stdio.h"
 #include "content/public/browser/trace_controller.h"
 #include "jni/TracingControllerAndroid_jni.h"
 
 namespace content {
 
 static jint Init(JNIEnv* env, jobject obj) {
   TracingControllerAndroid* profiler = new TracingControllerAndroid(env, obj);
@@ skipping 63 matching lines @@
 
 void TracingControllerAndroid::OnTracingStopped() {
   JNIEnv* env = base::android::AttachCurrentThread();
   base::android::ScopedJavaLocalRef<jobject> obj = weak_java_object_.get(env);
   if (obj.obj()) {
     Java_TracingControllerAndroid_onTracingStopped(env, obj.obj());
   }
   subscriber_.reset();
 }
 
+static jstring GetDefaultCategories(JNIEnv* env, jobject obj) {
+  return base::android::ConvertUTF8ToJavaString(env,
+      base::debug::CategoryFilter::kDefaultCategoryFilterString).Release();
+}
+
 bool RegisterTracingControllerAndroid(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace content