contacts: Add ContactStoreFactory and FakeContactStore.

chrome/browser/chromeos/contacts/contact_store.h

Index: chrome/browser/chromeos/contacts/contact_store.h
diff --git a/chrome/browser/chromeos/contacts/contact_store.h b/chrome/browser/chromeos/contacts/contact_store.h
index 4ac89092a0bbbb9eefdf1df6e275e7de635ad695..f7bb94aff45cbf6eaf2468016dfe164e5e07a980 100644
--- a/chrome/browser/chromeos/contacts/contact_store.h
+++ b/chrome/browser/chromeos/contacts/contact_store.h
@@ -10,6 +10,8 @@
 
 #include "base/basictypes.h"
 
+class Profile;
+
 namespace contacts {
 
 class Contact;
@@ -22,6 +24,9 @@ class ContactStore {
   ContactStore() {}
   virtual ~ContactStore() {}
 
+  // Initializes the object.
+  virtual void Init() = 0;
+
   // Appends all (non-deleted) contacts to |contacts_out|.
   virtual void AppendContacts(ContactPointers* contacts_out) = 0;
 
@@ -38,6 +43,22 @@ class ContactStore {
   DISALLOW_COPY_AND_ASSIGN(ContactStore);
 };
 
+// Interface for factories that return ContactStore objects of a given type.
+class ContactStoreFactory {
+ public:
+  ContactStoreFactory() {}
+  virtual ~ContactStoreFactory() {}
+
+  // Creates and returns a new, uninitialized ContactStore for |profile|.
+  // TODO(derat): Figure out how this should work if/when there are other
+  // ContactStore implementations that need additional information beyond the
+  // stuff contained in a Profile.
+  virtual ContactStore* CreateContactStore(Profile* profile) = 0;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ContactStoreFactory);
+};
+
 }  // namespace contacts
 
 #endif  // CHROME_BROWSER_CHROMEOS_CONTACTS_CONTACT_STORE_H_