Restrict recorded execution pauses to the required range.

R=jkummerow@chromium.org
BUG=

Review URL: https://codereview.chromium.org/24997003

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16991 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

tools/profviz/composer.js

@@ -497,6 +497,8 @@ function PlotScriptComposer(kResX, kResY, error_output) {
     }
 
     // Label the longest pauses.
+    execution_pauses =
+        RestrictRangesTo(execution_pauses, range_start, range_end);
     execution_pauses.sort(
         function(a, b) { return b.duration() - a.duration(); });