Revert "Add Chromium-style TimeDelta, Time and TimeTicks classes, and a new ElapsedTimer class."

src/profile-generator.h

Index: src/profile-generator.h
diff --git a/src/profile-generator.h b/src/profile-generator.h
index 928ec330e94ea5d2f06dfbaa4d2bc06ed0bd6357..a282af2bd04ca625cca52a29713cd645e55e6380 100644
--- a/src/profile-generator.h
+++ b/src/profile-generator.h
@@ -30,7 +30,6 @@
 
 #include "allocation.h"
 #include "hashmap.h"
-#include "time/time.h"
 #include "../include/v8-profiler.h"
 
 namespace v8 {
@@ -203,8 +202,8 @@ class CpuProfile {
   int samples_count() const { return samples_.length(); }
   ProfileNode* sample(int index) const { return samples_.at(index); }
 
-  Time start_time() const { return start_time_; }
-  Time end_time() const { return end_time_; }
+  int64_t start_time_us() const { return start_time_us_; }
+  int64_t end_time_us() const { return end_time_us_; }
 
   void UpdateTicksScale();
 
@@ -214,9 +213,8 @@ class CpuProfile {
   const char* title_;
   unsigned uid_;
   bool record_samples_;
-  Time start_time_;
-  Time end_time_;
-  ElapsedTimer timer_;
+  int64_t start_time_us_;
+  int64_t end_time_us_;
   List<ProfileNode*> samples_;
   ProfileTree top_down_;