Explicitly track the time source type in base/profiler/alternate_timer.h

base/profiler/alternate_timer.cc

Index: base/profiler/alternate_timer.cc
diff --git a/base/profiler/alternate_timer.cc b/base/profiler/alternate_timer.cc
index abf91802061d267f7335ac489d5a7f36f98f4555..4eba89c255eca523c8ca69f821ab0575c7b14fe1 100644
--- a/base/profiler/alternate_timer.cc
+++ b/base/profiler/alternate_timer.cc
@@ -9,6 +9,8 @@
 namespace {
 
 tracked_objects::NowFunction* g_time_function = NULL;
+tracked_objects::TimeSourceType g_time_source_type =
+    tracked_objects::TIME_SOURCE_TYPE_WALL_TIME;
 
 }  // anonymous namespace
 
@@ -18,13 +20,18 @@ const char kAlternateProfilerTime[] = "CHROME_PROFILER_TIME";
 
 // Set an alternate timer function to replace the OS time function when
 // profiling.
-void SetAlternateTimeSource(NowFunction* now_function) {
+void SetAlternateTimeSource(NowFunction* now_function, TimeSourceType type) {
   DCHECK_EQ(reinterpret_cast<NowFunction*>(NULL), g_time_function);
   g_time_function = now_function;
+  g_time_source_type = type;
 }
 
 NowFunction* GetAlternateTimeSource() {
   return g_time_function;
 }
 
+TimeSourceType GetTimeSourceType() {
+  return g_time_source_type;
+}
+
 }  // namespace tracked_objects