Eliminate the need for code delete events in CPU profiler.

test/cctest/log-eq-of-logging-and-traversal.js

Index: test/cctest/log-eq-of-logging-and-traversal.js
diff --git a/test/cctest/log-eq-of-logging-and-traversal.js b/test/cctest/log-eq-of-logging-and-traversal.js
index cd52da545a6d9ae24d69c61b52aa28349769cfbd..05643bfb8abb9afaf11be41ad0b2fd779e1f6012 100644
--- a/test/cctest/log-eq-of-logging-and-traversal.js
+++ b/test/cctest/log-eq-of-logging-and-traversal.js
@@ -43,8 +43,7 @@ function LogProcessor() {
           processor: this.processCodeCreation },
       'code-move': { parsers: [parseInt, parseInt],
           processor: this.processCodeMove },
-      'code-delete': { parsers: [parseInt],
-          processor: this.processCodeDelete },
+      'code-delete': null,
       'sfi-move': { parsers: [parseInt, parseInt],
           processor: this.processFunctionMove },
       'shared-library': null,
@@ -73,10 +72,6 @@ LogProcessor.prototype.processCodeMove = function(from, to) {
   this.profile.moveCode(from, to);
 };
 
-LogProcessor.prototype.processCodeDelete = function(start) {
-  this.profile.deleteCode(start);
-};
-
 LogProcessor.prototype.processFunctionMove = function(from, to) {
   this.profile.moveFunc(from, to);
 };
@@ -132,8 +127,8 @@ function RunTest() {
      "Script", "String", "RegExp", "Date", "Error"];
 
   function entitiesEqual(entityA, entityB) {
-    if (entityA === null && entityB !== null) return true;
-    if (entityA !== null && entityB === null) return false;
+    if ((entityA === null && entityB !== null) ||
+      (entityA !== null && entityB === null)) return true;
     return entityA.size === entityB.size && entityNamesEqual(entityA, entityB);
   }
 
@@ -145,6 +140,8 @@ function RunTest() {
   // find the same entries. We skip builtins during log parsing, but compiled
   // functions traversal may erroneously recognize them as functions, so we are
   // expecting more functions in traversal vs. logging.
+  // Since we don't track code deletions, logging can also report more entries
+  // than traversal.
   while (l_pos < l_len && t_pos < t_len) {
     var entryA = logging_entries[l_pos];
     var entryB = traversal_entries[t_pos];
@@ -166,11 +163,6 @@ function RunTest() {
     if (!entities_equal) equal = false;
     comparison.push([entities_equal, address, entityA, entityB]);
   }
-  if (l_pos < l_len) equal = false;
-  while (l_pos < l_len) {
-    var entryA = logging_entries[l_pos++];
-    comparison.push([false, entryA[0], entryA[1], null]);
-  }
   return [equal, comparison];
 }