| Index: content/renderer/categorized_worker_pool.cc
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| diff --git a/content/renderer/categorized_worker_pool.cc b/content/renderer/categorized_worker_pool.cc
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| index fc89b888fa1ef71f10bb62e0f910b75c6446a342..8ce19ba426ca8a587f6fa361c74c4ecf5a98e291 100644
 | 
| --- a/content/renderer/categorized_worker_pool.cc
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| +++ b/content/renderer/categorized_worker_pool.cc
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| @@ -63,6 +63,7 @@ class CategorizedWorkerPool::CategorizedWorkerPoolSequencedTaskRunner
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|    bool PostNonNestableDelayedTask(const tracked_objects::Location& from_here,
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|                                    base::Closure task,
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|                                    base::TimeDelta delay) override {
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| +    DCHECK(task);
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|      base::AutoLock lock(lock_);
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|  
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|      // Remove completed tasks.
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| 
 |