Show data usage on Site Details (MDSettings)

chrome/browser/content_settings/storage_info_fetcher.h

Index: chrome/browser/content_settings/storage_info_fetcher.h
diff --git a/chrome/browser/content_settings/storage_info_fetcher.h b/chrome/browser/content_settings/storage_info_fetcher.h
new file mode 100644
index 0000000000000000000000000000000000000000..26ba5e439baf6893f61a50665e57a4973e0fe791
--- /dev/null
+++ b/chrome/browser/content_settings/storage_info_fetcher.h
@@ -0,0 +1,38 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.

[raymes, 2016/01/20 02:51:42]

Hmm not sure if this is the right place to put this file. I would either put it
with the web UI side of things or the storage side of things.

[Finnur, 2016/01/22 15:07:35]

It doesn't belong under Web UI because I plan on making Android depend on this
as well, so I moved it with storage.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_CONTENT_SETTINGS_STORAGE_INFO_FETCHER_H_
+#define CHROME_BROWSER_CONTENT_SETTINGS_STORAGE_INFO_FETCHER_H_
+
+#include "content/public/browser/browser_thread.h"

[michaelpg, 2016/01/19 20:47:54]

is this used here?

[Finnur, 2016/01/22 15:07:35]

Nope, moved.

+#include "storage/browser/quota/quota_manager.h"
+
+class StorageInfoFetcher :

[Finnur, 2016/01/19 17:08:57]

This class is really a distillation of the one that serves the same
purpose in website_preference_bridge.cc (not in this CL), and I
intend to convert to use this as base as well, much like how
site_settings_handler.cc in this CL uses it.

[michaelpg, 2016/01/19 20:47:54]

add comment for class

[Finnur, 2016/01/22 15:07:35]

Done.

+    public base::RefCountedThreadSafe<StorageInfoFetcher> {

[michaelpg, 2016/01/19 20:47:54]

include ref_counted.h

[Finnur, 2016/01/22 15:07:35]

Done.

+ public:
+  explicit StorageInfoFetcher(storage::QuotaManager* quota_manager);
+
+  // Asynchronously fetches the StorageInfo.
+  void Run();
+
+ protected:
+  virtual ~StorageInfoFetcher();
+
+  // The callback for when usage information is ready.
+  virtual void OnGetUsageInfo(const storage::UsageInfoEntries& entries) = 0;
+
+ private:
+  friend class base::RefCountedThreadSafe<StorageInfoFetcher>;
+
+  void GetUsageInfo();
+  void OnGetUsageInfoInternal(const storage::UsageInfoEntries& entries);
+  void InvokeCallback();
+
+  storage::QuotaManager* quota_manager_;
+  storage::UsageInfoEntries entries_;
+
+  DISALLOW_COPY_AND_ASSIGN(StorageInfoFetcher);
+};
+
+#endif  // CHROME_BROWSER_CONTENT_SETTINGS_STORAGE_INFO_FETCHER_H_