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

src/log.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 13 matching lines @@
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #ifndef V8_LOG_H_
 #define V8_LOG_H_
 
 #include "allocation.h"
 #include "objects.h"
 #include "platform.h"
-#include "time/elapsed-timer.h"
 
 namespace v8 {
 namespace internal {
 
 // Logger is used for collecting logging information from V8 during
 // execution. The result is dumped to a file.
 //
 // Available command line flags:
 //
 //  --log
@@ skipping 399 matching lines @@
 
   Log* log_;
   LowLevelLogger* ll_logger_;
   JitLogger* jit_logger_;
   List<CodeEventListener*> listeners_;
 
   // Guards against multiple calls to TearDown() that can happen in some tests.
   // 'true' between SetUp() and TearDown().
   bool is_initialized_;
 
-  ElapsedTimer timer_;
+  int64_t epoch_;
 
   friend class CpuProfiler;
 };
 
 
 class CodeEventListener {
  public:
   virtual ~CodeEventListener() {}
 
   virtual void CodeCreateEvent(Logger::LogEventsAndTags tag,
@@ skipping 69 matching lines @@
                                  int length) = 0;
 
   NameBuffer* name_buffer_;
 };
 
 
 } }  // namespace v8::internal
 
 
 #endif  // V8_LOG_H_