Restrict recorded execution pauses to the required range.

tools/profviz/composer.js

 // Copyright 2013 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 479 matching lines @@
       obj_index++;
     }
 
     if (execution_pauses.length == 0) {
       // Force plot and return without plotting execution pause impulses.
       output("plot 1/0");
       return;
     }
 
     // Label the longest pauses.
+    execution_pauses =
+        RestrictRangesTo(execution_pauses, range_start, range_end);
     execution_pauses.sort(
         function(a, b) { return b.duration() - a.duration(); });
 
     var max_pause_time = execution_pauses[0].duration();
     padding = kPauseLabelPadding * (range_end - range_start) / kResX;
     var y_scale = kY1Offset / max_pause_time / 2;
     for (var i = 0; i < execution_pauses.length && i < kNumPauseLabels; i++) {
       var pause = execution_pauses[i];
       var label_content = (pause.duration() | 0) + " ms";
       var label_x = pause.end + padding;
@@ skipping 10 matching lines @@
     output("plot '-' using 1:2 axes x1y2 with impulses ls 1");
     for (var i = 0; i < execution_pauses.length; i++) {
       var pause = execution_pauses[i];
       output(pause.end + " " + pause.duration());
       obj_index++;
     }
     output("e");
     return obj_index;
   };
 }