This adds periodic OOM score adjustment, based on the last access time

base/task.h

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef BASE_TASK_H_
 #define BASE_TASK_H_
 #pragma once
 
 #include "base/non_thread_safe.h"
 #include "base/raw_scoped_refptr_mismatch_checker.h"
@@ skipping 253 matching lines @@
 //
 // The invocation of DISABLE_RUNNABLE_METHOD_REFCOUNT should be done at the
 // global namespace scope.  Example:
 //
 //   namespace foo {
 //   class Bar {
 //     ...
 //   };
 //   }  // namespace foo
 //
-//   DISABLE_RUNNABLE_METHOD_REFCOUNT(foo::Bar)
+//   DISABLE_RUNNABLE_METHOD_REFCOUNT(foo::Bar);
 //
 // This is different from DISALLOW_COPY_AND_ASSIGN which is declared inside the
 // class.
 #define DISABLE_RUNNABLE_METHOD_REFCOUNT(TypeName) \
   template <>                                      \
   struct RunnableMethodTraits<TypeName> {          \
     void RetainCallee(TypeName* manager) {}        \
     void ReleaseCallee(TypeName* manager) {}       \
   }
 
@@ skipping 232 matching lines @@
 inline CancelableTask* NewRunnableFunction(Function function,
                                            const A& a, const B& b,
                                            const C& c, const D& d,
                                            const E& e, const F& f,
                                            const G& g, const H& h) {
   return new RunnableFunction<Function, Tuple8<A, B, C, D, E, F, G, H> >(
       function, MakeTuple(a, b, c, d, e, f, g, h));
 }
 
 #endif  // BASE_TASK_H_