Adding support for Time and TimeTicks inside trace_event.

base/debug/trace_event.h

Index: base/debug/trace_event.h
diff --git a/base/debug/trace_event.h b/base/debug/trace_event.h
index 2fd03c9046d219d9d0f005aaaf3acf4c62d818c8..6d6d3e303cfc23739aa9c83e06514bec58cf945b 100644
--- a/base/debug/trace_event.h
+++ b/base/debug/trace_event.h
@@ -195,6 +195,7 @@
 #include "base/debug/trace_event_impl.h"
 #include "base/debug/trace_event_memory.h"
 #include "base/debug/trace_event_system_stats_monitor.h"
+#include "base/time/time.h"
 #include "build/build_config.h"
 
 // By default, const char* argument values are assumed to have long-lived scope
@@ -1159,6 +1160,22 @@ static inline void SetTraceValue(const std::string& arg,
   *value = type_value.as_uint;
 }
 
+// base::Time and base::TimeTicks version of SetTraceValue to make it easier to
+// trace these types.
+static inline void SetTraceValue(const base::Time arg,
+                                 unsigned char* type,
+                                 unsigned long long* value) {
+  *type = TRACE_VALUE_TYPE_INT;
+  *value = arg.ToInternalValue();
+}
+
+static inline void SetTraceValue(const base::TimeTicks arg,
+                                 unsigned char* type,
+                                 unsigned long long* value) {
+  *type = TRACE_VALUE_TYPE_INT;
+  *value = arg.ToInternalValue();
+}
+
 // These AddTraceEvent and AddTraceEventWithThreadIdAndTimestamp template
 // functions are defined here instead of in the macro, because the arg_values
 // could be temporary objects, such as std::string. In order to store