Add initial Controller to DownloadService

components/download/internal/model.h

Index: components/download/internal/model.h
diff --git a/components/download/internal/model.h b/components/download/internal/model.h
index d7f6d105156b456a0123eeced297bdb046c3a17f..d45a25594d91009241760637abf1d56d050d41dd 100644
--- a/components/download/internal/model.h
+++ b/components/download/internal/model.h
@@ -30,7 +30,7 @@ class Model {
     // |success| is |false|, initialization of the Model and/or the underlying
     // Store failed.  Initialization of the Model is complete after this
     // callback.  If |success| is true it can be accessed now.
-    virtual void OnInitialized(bool success) = 0;
+    virtual void OnModelReady(bool success) = 0;
 
     // Called when an Entry addition is complete.  |success| determines whether
     // or not the entry has been successfully persisted to the Store.
@@ -57,7 +57,7 @@ class Model {
 
   // Initializes the Model.  Client::OnInitialized() will be called in response.
   // The Model can be used after that call.
-  virtual void Initialize() = 0;
+  virtual void Initialize(Client* client) = 0;
 
   // Adds |entry| to this Model and attempts to write |entry| to the Store.
   // Client::OnItemAdded() will be called in response asynchronously.