Implement DriveAppRegistry::UninstallApp() and GetAppList().

chrome/browser/drive/drive_app_registry.h

Index: chrome/browser/drive/drive_app_registry.h
diff --git a/chrome/browser/drive/drive_app_registry.h b/chrome/browser/drive/drive_app_registry.h
index cb15dc12050b1ca81600c9746c06eb1f3ba9b2c3..dd53bae4b62972a36e5a116356e16ad67bbb5746 100644
--- a/chrome/browser/drive/drive_app_registry.h
+++ b/chrome/browser/drive/drive_app_registry.h
@@ -9,6 +9,7 @@
 #include <string>
 #include <vector>
 
+#include "base/callback_forward.h"
 #include "base/files/file_path.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
@@ -51,6 +52,9 @@ struct DriveAppInfo {
   GURL create_url;
 };
 
+// Callback type for UninstallApp().
+typedef base::Callback<void(google_apis::GDataErrorCode)> UninstallCallback;
+
 // Keeps the track of installed drive applications in-memory.
 class DriveAppRegistry {
  public:
@@ -63,6 +67,19 @@ class DriveAppRegistry {
                       const std::string& mime_type,
                       std::vector<DriveAppInfo>* apps) const;
 
+  // Returns the list of all Drive apps installed.
+  void GetAppList(std::vector<DriveAppInfo>* apps) const;
+
+  // Uninstalls the app specified by |app_id|. This method sends requests to the
+  // remote server, and returns the result to |callback| asynchronously.
+  // |callback| must not be null.
+  void UninstallApp(const std::string& app_id,
+                    const UninstallCallback& callback);
+
+  // Checks whether UinstallApp is supported. The feature is available only for
+  // clients with whitelisted API keys (like Official Google Chrome build).
+  static bool IsAppUninstallSupported();
+
   // Updates this registry by fetching the data from the server.
   void Update();
 
@@ -75,6 +92,11 @@ class DriveAppRegistry {
   void UpdateAfterGetAppList(google_apis::GDataErrorCode gdata_error,
                              scoped_ptr<google_apis::AppList> app_list);
 
+  // Part of UninstallApp(). Receives the response from the server.
+  void OnAppUninstalled(const std::string& app_id,
+                        const UninstallCallback& callback,
+                        google_apis::GDataErrorCode error);
+
   // Map of application id to each app's info.
   std::map<std::string, DriveAppInfo> all_apps_;