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

content/public/android/java/src/org/chromium/content/browser/TracingControllerAndroid.java

Index: content/public/android/java/src/org/chromium/content/browser/TracingControllerAndroid.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/TracingControllerAndroid.java b/content/public/android/java/src/org/chromium/content/browser/TracingControllerAndroid.java
index 8a900022807c6626c5cc8e4395bb39135004c516..4ef58695a1a6b7c46c6bed3fb814eea3aa3ef6c1 100644
--- a/content/public/android/java/src/org/chromium/content/browser/TracingControllerAndroid.java
+++ b/content/public/android/java/src/org/chromium/content/browser/TracingControllerAndroid.java
@@ -113,15 +113,8 @@ public class TracingControllerAndroid {
     /**
      * Start profiling to a new file in the Downloads directory.
      *
-     * Calls #startTracing(String) with a new timestamped filename.
-     *
-     * @param showToasts Whether or not we want to show toasts during this profiling session.
-     * When we are timing the profile run we might not want to incur extra draw overhead of showing
-     * notifications about the profiling system.
-     * @param categories Which categories to trace. See TracingControllerAndroid::BeginTracing()
-     * (in content/public/browser/trace_controller.h) for the format.
-     * @param recordContinuously Record until the user ends the trace. The trace buffer is fixed
-     * size and we use it as a ring buffer during recording.
+     * Calls #startTracing(String, boolean, String, boolean) with a new timestamped filename.
+     * @see #startTracing(String, boolean, String, boolean)
      */
     public boolean startTracing(boolean showToasts, String categories,
             boolean recordContinuously) {
@@ -245,7 +238,7 @@ public class TracingControllerAndroid {
             if (intent.getAction().endsWith(ACTION_START)) {
                 String categories = intent.getStringExtra(CATEGORIES_EXTRA);
                 if (categories == null) {
-                    categories = "*";
+                    categories = nativeGetDefaultCategories();
                 }
                 boolean recordContinuously =
                         intent.getStringExtra(RECORD_CONTINUOUSLY_EXTRA) != null;
@@ -269,4 +262,5 @@ public class TracingControllerAndroid {
     private native boolean nativeStartTracing(int nativeTracingControllerAndroid, String filename,
             String categories, boolean recordContinuously);
     private native void nativeStopTracing(int nativeTracingControllerAndroid);
+    private native String nativeGetDefaultCategories();
 }