Replace RoundMicrosecondsTo* utility.

runtime/vm/pages.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/pages.h"
 
 #include "platform/assert.h"
 #include "vm/compiler_stats.h"
 #include "vm/gc_marker.h"
 #include "vm/gc_sweeper.h"
@@ skipping 405 matching lines @@
 
 void PageSpace::PrintToJSONObject(JSONObject* object) {
   JSONObject space(object, "old");
   space.AddProperty("type", "PageSpace");
   space.AddProperty("id", "heaps/old");
   space.AddProperty("name", "PageSpace");
   space.AddProperty("user_name", "old");
   space.AddProperty("collections", collections());
   space.AddProperty("used", UsedInWords() * kWordSize);
   space.AddProperty("capacity", CapacityInWords() * kWordSize);
-  space.AddProperty("time", RoundMicrosecondsToSeconds(gc_time_micros()));
+  space.AddProperty("time", MicrosecondsToSeconds(gc_time_micros()));
 }
 
 
 bool PageSpace::ShouldCollectCode() {
   // Try to collect code if enough time has passed since the last attempt.
   const int64_t start = OS::GetCurrentTimeMicros();
   const int64_t last_code_collection_in_us =
       page_space_controller_.last_code_collection_in_us();
 
   if ((start - last_code_collection_in_us) >
@@ skipping 265 matching lines @@
     return 0;
   } else {
     ASSERT(total_time >= gc_time);
     int result= static_cast<int>((static_cast<double>(gc_time) /
                              static_cast<double>(total_time)) * 100);
     return result;
   }
 }
 
 }  // namespace dart