Fix memory-leak in default platform implementation of delayed tasks.

src/libplatform/default-platform.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/libplatform/default-platform.h"
 
 #include <algorithm>
 #include <queue>
 
 #include "src/base/logging.h"
@@ skipping 23 matching lines @@
 
 
 DefaultPlatform::DefaultPlatform()
     : initialized_(false), thread_pool_size_(0) {}
 
 
 DefaultPlatform::~DefaultPlatform() {
   base::LockGuard<base::Mutex> guard(&lock_);
   queue_.Terminate();
   if (initialized_) {
-    for (std::vector<WorkerThread*>::iterator i = thread_pool_.begin();
-         i != thread_pool_.end(); ++i) {
+    for (auto i = thread_pool_.begin(); i != thread_pool_.end(); ++i) {
       delete *i;
     }
   }
-  for (std::map<v8::Isolate*, std::queue<Task*> >::iterator i =
-           main_thread_queue_.begin();
-       i != main_thread_queue_.end(); ++i) {
+  for (auto i = main_thread_queue_.begin(); i != main_thread_queue_.end();
+       ++i) {
     while (!i->second.empty()) {
       delete i->second.front();
       i->second.pop();
     }
   }
+  for (auto i = main_thread_delayed_queue_.begin();
+       i != main_thread_delayed_queue_.end(); ++i) {
+    while (!i->second.empty()) {
+      delete i->second.top().second;
+      i->second.pop();
+    }
+  }
 }
 
 
 void DefaultPlatform::SetThreadPoolSize(int thread_pool_size) {
   base::LockGuard<base::Mutex> guard(&lock_);
   DCHECK(thread_pool_size >= 0);
   if (thread_pool_size < 1) {
     thread_pool_size = base::SysInfo::NumberOfProcessors();
   }
   thread_pool_size_ =
@@ skipping 80 matching lines @@
   double deadline = MonotonicallyIncreasingTime() + delay_in_seconds;
   main_thread_delayed_queue_[isolate].push(std::make_pair(deadline, task));
 }
 
 
 double DefaultPlatform::MonotonicallyIncreasingTime() {
   return base::TimeTicks::HighResolutionNow().ToInternalValue() /
          static_cast<double>(base::Time::kMicrosecondsPerSecond);
 }
 } }  // namespace v8::platform