Introduce AppsClient and use it in apps to get the loaded profiles list.

apps/apps_client.h

Index: apps/apps_client.h
diff --git a/apps/apps_client.h b/apps/apps_client.h
new file mode 100644
index 0000000000000000000000000000000000000000..a454d7e28efea4a9789b6804f3a319f5b1052b5f
--- /dev/null
+++ b/apps/apps_client.h
@@ -0,0 +1,32 @@
+// Copyright 2013 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 APPS_COMMON_APPS_CLIENT_H_

[tapted, 2013/09/04 01:08:35]

include guard has '_COMMON_' - maybe from an earlier iteration

[benwells, 2013/09/10 16:48:50]

Done.

+#define APPS_COMMON_APPS_CLIENT_H_
+
+#include <vector>
+
+namespace content {
+class BrowserContext;
+}
+
+namespace apps {
+
+// Sets up global state for the apps system. Should be Set() once in each
+// process. This should be implemented by the client of the apps system.
+class AppsClient {
+ public:
+  // Get all loaded browser contexts.
+  virtual std::vector<content::BrowserContext*> GetLoadedBrowserContexts() = 0;
+
+  // Return the apps client.
+  static AppsClient* Get();
+
+  // Initialize the apps system with this apps client.
+  static void Set(AppsClient* client);
+};
+
+}  // namespace apps
+
+#endif  // APPS_COMMON_APPS_CLIENT_H_