Upgrade V8 to 5.1.281.57  DO NOT MERGE

FPIIM-449

Change-Id: Id981b686b4d587ac31697662eb98bb34be42ad90
(cherry picked from commit 3b9bc31999c9787eb726ecdbfd5796bfdec32a18)
diff --git a/tools/tick-processor.html b/tools/tick-processor.html
index bc9f636..a785a6e 100644
--- a/tools/tick-processor.html
+++ b/tools/tick-processor.html
@@ -82,7 +82,6 @@
 function start_process() {
   ArgumentsProcessor.DEFAULTS = {
     logFileName: 'v8.log',
-    snapshotLogFileName: null,
     platform: 'unix',
     stateFilter: null,
     callGraphSize: 5,
@@ -98,8 +97,6 @@
     'mac': MacCppEntriesProvider
   };
 
-  var snapshotLogProcessor; // not used
-
   var tickProcessor = new TickProcessor(
     new (entriesProviders[ArgumentsProcessor.DEFAULTS.platform])(
         ArgumentsProcessor.DEFAULTS.nm,
@@ -107,8 +104,7 @@
     ArgumentsProcessor.DEFAULTS.separateIc,
     ArgumentsProcessor.DEFAULTS.callGraphSize,
     ArgumentsProcessor.DEFAULTS.ignoreUnknown,
-    ArgumentsProcessor.DEFAULTS.stateFilter,
-    snapshotLogProcessor);
+    ArgumentsProcessor.DEFAULTS.stateFilter);
 
   tickProcessor.processLogChunk(v8log_content);
   tickProcessor.printStatistics();