Adding ExtensionPrefs methods for storing update-when-idle data.

This includes adding a few methods to ExtensionPrefs that I'm going to need to
use inside ExtensionUpdater for implementing the "do updates at idle" feature.
Instead of adding more call-through stubs to the interface that 
ExtensionsService providers to the ExtensionUpdater, I instead decided it was 
time to do some refactoring to expose a ExtensionPrefs getter in the interface.

TEST=(Should be covered by unit/browser tests)
BUG=37971


Review URL: http://codereview.chromium.org/1695018

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@45738 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 57 insertions, 0 deletions

diff --git a/chrome/browser/extensions/test_extension_prefs.h b/chrome/browser/extensions/test_extension_prefs.h
new file mode 100644
index 0000000..0ad84c1
--- /dev/null
+++ b/chrome/browser/extensions/test_extension_prefs.h
@@ -0,0 +1,57 @@
+// 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_EXTENSIONS_TEST_EXTENSION_PREFS_H_
+#define CHROME_BROWSER_EXTENSIONS_TEST_EXTENSION_PREFS_H_
+
+#include <string>
+
+#include "base/scoped_ptr.h"
+#include "base/scoped_temp_dir.h"
+
+class DictionaryValue;
+class Extension;
+class ExtensionPrefs;
+class PrefService;
+
+
+// This is a test class intended to make it easier to work with ExtensionPrefs
+// in tests.
+class TestExtensionPrefs {
+ public:
+  TestExtensionPrefs();
+  virtual ~TestExtensionPrefs();
+
+  ExtensionPrefs* prefs() { return prefs_.get(); }
+  PrefService* pref_service() { return pref_service_.get(); }
+  const FilePath& temp_dir() const { return temp_dir_.path(); }
+
+  // This will cause the ExtensionPrefs to be deleted and recreated, based on
+  // any existing backing file we had previously created.
+  void RecreateExtensionPrefs();
+
+  // Creates a new Extension with the given name in our temp dir, adds it to
+  // our ExtensionPrefs, and returns it.
+  Extension* AddExtension(std::string name);
+
+  // Similar to AddExtension, but takes a dictionary with manifest values.
+  Extension* AddExtensionWithManifest(const DictionaryValue& manifest);
+
+  // Similar to AddExtension, this adds a new test Extension. This is useful for
+  // cases when you don't need the Extension object, but just the id it was
+  // assigned.
+  std::string AddExtensionAndReturnId(std::string name);
+
+ protected:
+  ScopedTempDir temp_dir_;
+  FilePath preferences_file_;
+  FilePath extensions_dir_;
+  scoped_ptr<PrefService> pref_service_;
+  scoped_ptr<ExtensionPrefs> prefs_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(TestExtensionPrefs);
+};
+
+#endif  // CHROME_BROWSER_EXTENSIONS_TEST_EXTENSION_PREFS_H_