Hook up indexed databases to content settings.

Step 2: add a browsing data helper for indexed databases.

BUG=56248
TEST=CannedBrowsingDataIndexedDBHelperTest.*,BrowsingDataIndexedDBHelperTest.*

Review URL: http://codereview.chromium.org/3468007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@60270 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 125 insertions, 0 deletions

diff --git a/chrome/browser/browsing_data_indexed_db_helper.h b/chrome/browser/browsing_data_indexed_db_helper.h
new file mode 100644
index 0000000..c3704ec
--- /dev/null
+++ b/chrome/browser/browsing_data_indexed_db_helper.h
@@ -0,0 +1,125 @@
+// Copyright (c) 2010 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 CHROME_BROWSER_BROWSING_DATA_INDEXED_DB_HELPER_H_
+#define CHROME_BROWSER_BROWSING_DATA_INDEXED_DB_HELPER_H_
+#pragma once
+
+#include <string>
+#include <vector>
+
+#include "base/callback.h"
+#include "base/file_path.h"
+#include "base/ref_counted.h"
+#include "base/time.h"
+#include "chrome/common/url_constants.h"
+#include "googleurl/src/gurl.h"
+
+class Profile;
+
+// BrowsingDataIndexedDBHelper is an interface for classes dealing with
+// aggregating and deleting browsing data stored in indexed databases.  A
+// client of this class need to call StartFetching from the UI thread to
+// initiate the flow, and it'll be notified by the callback in its UI thread at
+// some later point.  The client must call CancelNotification() if it's
+// destroyed before the callback is notified.
+class BrowsingDataIndexedDBHelper
+    : public base::RefCountedThreadSafe<BrowsingDataIndexedDBHelper> {
+ public:
+  // Contains detailed information about an indexed database.
+  struct IndexedDBInfo {
+    IndexedDBInfo(
+        const std::string& protocol,
+        const std::string& host,
+        unsigned short port,
+        const std::string& database_identifier,
+        const std::string& origin,
+        const std::string& database_name,
+        const FilePath& file_path,
+        int64 size,
+        base::Time last_modified)
+        : protocol(protocol),
+          host(host),
+          port(port),
+          database_identifier(database_identifier),
+          origin(origin),
+          database_name(database_name),
+          file_path(file_path),
+          size(size),
+          last_modified(last_modified) {
+    }
+
+    bool IsFileSchemeData() {
+      return protocol == chrome::kFileScheme;
+    }
+
+    std::string protocol;
+    std::string host;
+    unsigned short port;
+    std::string database_identifier;
+    std::string origin;
+    std::string database_name;
+    FilePath file_path;
+    int64 size;
+    base::Time last_modified;
+  };
+
+  // Create a BrowsingDataIndexedDBHelper instance for the indexed databases
+  // stored in |profile|'s user data directory.
+  static BrowsingDataIndexedDBHelper* Create(Profile* profile);
+
+  // Starts the fetching process, which will notify its completion via
+  // callback.
+  // This must be called only in the UI thread.
+  virtual void StartFetching(
+      Callback1<const std::vector<IndexedDBInfo>& >::Type* callback) = 0;
+  // Cancels the notification callback (i.e., the window that created it no
+  // longer exists).
+  // This must be called only in the UI thread.
+  virtual void CancelNotification() = 0;
+  // Requests a single indexed database file to be deleted in the WEBKIT thread.
+  virtual void DeleteIndexedDBFile(const FilePath& file_path) = 0;
+
+ protected:
+  friend class base::RefCountedThreadSafe<BrowsingDataIndexedDBHelper>;
+  virtual ~BrowsingDataIndexedDBHelper() {}
+};
+
+// This class is an implementation of BrowsingDataIndexedDBHelper that does
+// not fetch its information from the indexed database tracker, but gets them
+// passed as a parameter.
+class CannedBrowsingDataIndexedDBHelper
+    : public BrowsingDataIndexedDBHelper {
+ public:
+  explicit CannedBrowsingDataIndexedDBHelper(Profile* profile);
+
+  // Add a indexed database to the set of canned indexed databases that is
+  // returned by this helper.
+  void AddIndexedDB(const GURL& origin,
+                    const string16& name,
+                    const string16& description);
+
+  // Clear the list of canned indexed databases.
+  void Reset();
+
+  // True if no indexed databases are currently stored.
+  bool empty() const;
+
+  // BrowsingDataIndexedDBHelper methods.
+  virtual void StartFetching(
+      Callback1<const std::vector<IndexedDBInfo>& >::Type* callback);
+  virtual void CancelNotification() {}
+  virtual void DeleteIndexedDBFile(const FilePath& file_path) {}
+
+ private:
+  virtual ~CannedBrowsingDataIndexedDBHelper() {}
+
+  Profile* profile_;
+
+  std::vector<IndexedDBInfo> indexed_db_info_;
+
+  DISALLOW_COPY_AND_ASSIGN(CannedBrowsingDataIndexedDBHelper);
+};
+
+#endif  // CHROME_BROWSER_BROWSING_DATA_INDEXED_DB_HELPER_H_