Convert //chrome/browser/extensions from scoped_ptr to std::unique_ptr

chrome/browser/extensions/api/sessions/sessions_api.h

Index: chrome/browser/extensions/api/sessions/sessions_api.h
diff --git a/chrome/browser/extensions/api/sessions/sessions_api.h b/chrome/browser/extensions/api/sessions/sessions_api.h
index 9edf54648cf00e22f6874ab2d00dbe527bee03c7..cd1afeb4eef339ba6a5ddbb594d8a61cc618cbbc 100644
--- a/chrome/browser/extensions/api/sessions/sessions_api.h
+++ b/chrome/browser/extensions/api/sessions/sessions_api.h
@@ -38,10 +38,10 @@ class SessionsGetRecentlyClosedFunction : public ChromeSyncExtensionFunction {
   api::tabs::Tab CreateTabModel(const sessions::TabRestoreService::Tab& tab,
                                 int session_id,
                                 int selected_index);
-  scoped_ptr<api::windows::Window> CreateWindowModel(
+  std::unique_ptr<api::windows::Window> CreateWindowModel(
       const sessions::TabRestoreService::Window& window,
       int session_id);
-  scoped_ptr<api::sessions::Session> CreateSessionModel(
+  std::unique_ptr<api::sessions::Session> CreateSessionModel(
       const sessions::TabRestoreService::Entry* entry);
 };
 
@@ -56,10 +56,10 @@ class SessionsGetDevicesFunction : public ChromeSyncExtensionFunction {
                                 const sessions::SessionTab& tab,
                                 int tab_index,
                                 int selected_index);
-  scoped_ptr<api::windows::Window> CreateWindowModel(
+  std::unique_ptr<api::windows::Window> CreateWindowModel(
       const sessions::SessionWindow& window,
       const std::string& session_tag);
-  scoped_ptr<api::sessions::Session> CreateSessionModel(
+  std::unique_ptr<api::sessions::Session> CreateSessionModel(
       const sessions::SessionWindow& window,
       const std::string& session_tag);
   api::sessions::Device CreateDeviceModel(
@@ -133,7 +133,7 @@ class SessionsAPI : public BrowserContextKeyedAPI,
   static const bool kServiceIsNULLWhileTesting = true;
 
   // Created lazily upon OnListenerAdded.
-  scoped_ptr<SessionsEventRouter> sessions_event_router_;
+  std::unique_ptr<SessionsEventRouter> sessions_event_router_;
 
   DISALLOW_COPY_AND_ASSIGN(SessionsAPI);
 };