[CacheStorage] Add metrics to the scheduler

content/browser/cache_storage/cache_storage_operation.h

+// Copyright 2016 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 CONTENT_BROWSER_CACHE_STORAGE_CACHE_STORAGE_OPERATION_H_
+#define CONTENT_BROWSER_CACHE_STORAGE_CACHE_STORAGE_OPERATION_H_
+
+#include "base/bind.h"
+#include "base/callback.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/weak_ptr.h"
+#include "base/time/time.h"
+#include "content/browser/cache_storage/cache_storage_scheduler_client.h"
+#include "content/common/content_export.h"
+
+namespace content {
+
+// An operation to run in the CacheStorageScheduler. It's mostly just a closure
+// to run plus a bunch of metrics data.
+class CONTENT_EXPORT CacheStorageOperation {
+ public:
+  CacheStorageOperation(
+      const base::Closure& closure,
+      CacheStorageSchedulerClient client_type,
+      scoped_refptr<base::SingleThreadTaskRunner> task_runner);
+
+  ~CacheStorageOperation();
+
+  // Run the closure passed to the constructor.
+  void Run();
+
+  base::TimeTicks creation_ticks() const { return creation_ticks_; }
+  base::WeakPtr<CacheStorageOperation> AsWeakPtr() {
+    return weak_ptr_factory_.GetWeakPtr();
+  }
+
+ private:
+  void NotifyOperationSlow();
+
+  // The operation's closure to run.
+  base::Closure closure_;
+
+  // Ticks at time of object creation.
+  base::TimeTicks creation_ticks_;
+
+  // Ticks at time the operation's closure is run.
+  base::TimeTicks start_ticks_;
+
+  // If the operation took a long time to run.
+  bool was_slow_ = false;
+
+  CacheStorageSchedulerClient client_type_;
+  scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
+  base::WeakPtrFactory<CacheStorageOperation> weak_ptr_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(CacheStorageOperation);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_CACHE_STORAGE_CACHE_STORAGE_OPERATION_H_