[Sync] Fix namespaces for the sync_sessions component.

chrome/browser/ui/toolbar/recent_tabs_sub_menu_model.h

Index: chrome/browser/ui/toolbar/recent_tabs_sub_menu_model.h
diff --git a/chrome/browser/ui/toolbar/recent_tabs_sub_menu_model.h b/chrome/browser/ui/toolbar/recent_tabs_sub_menu_model.h
index ca5b0be2132bd56669526f30cf4c13f514f252ce..0c5b74c1196f47f0c2159d9664e3d0889faefdbe 100644
--- a/chrome/browser/ui/toolbar/recent_tabs_sub_menu_model.h
+++ b/chrome/browser/ui/toolbar/recent_tabs_sub_menu_model.h
@@ -20,10 +20,6 @@
 
 class Browser;
 
-namespace sync_driver {
-class OpenTabsUIDelegate;
-}
-
 namespace favicon_base {
 struct FaviconImageResult;
 }
@@ -36,6 +32,10 @@ namespace sessions {
 struct SessionTab;
 }
 
+namespace sync_sessions {
+class OpenTabsUIDelegate;
+}
+
 namespace ui {
 class AcceleratorProvider;
 }
@@ -60,7 +60,7 @@ class RecentTabsSubMenuModel : public ui::SimpleMenuModel,
   // profile will be used. Testing may require a specific |open_tabs_delegate|.
   RecentTabsSubMenuModel(ui::AcceleratorProvider* accelerator_provider,
                          Browser* browser,
-                         sync_driver::OpenTabsUIDelegate* open_tabs_delegate);
+                         sync_sessions::OpenTabsUIDelegate* open_tabs_delegate);
   ~RecentTabsSubMenuModel() override;
 
   // Overridden from ui::SimpleMenuModel::Delegate:
@@ -110,7 +110,7 @@ class RecentTabsSubMenuModel : public ui::SimpleMenuModel,
 
   // Add the favicon for the device section header.
   void AddDeviceFavicon(int index_in_menu,
-                        sync_driver::SyncedSession::DeviceType device_type);
+                        sync_sessions::SyncedSession::DeviceType device_type);
 
   // Add the favicon for a local or other devices' tab asynchronously,
   // OnFaviconDataAvailable() will be invoked when the favicon is ready.
@@ -132,7 +132,7 @@ class RecentTabsSubMenuModel : public ui::SimpleMenuModel,
   // can always skip going through the function and access the field directly.
   // Consider instead having code just deal with potentially NULL open_tabs_
   // and have it initialized by an event / callback.
-  sync_driver::OpenTabsUIDelegate* GetOpenTabsUIDelegate();
+  sync_sessions::OpenTabsUIDelegate* GetOpenTabsUIDelegate();
 
   // Overridden from TabRestoreServiceObserver:
   void TabRestoreServiceChanged(sessions::TabRestoreService* service) override;
@@ -141,7 +141,7 @@ class RecentTabsSubMenuModel : public ui::SimpleMenuModel,
 
   Browser* browser_;  // Weak.
 
-  sync_driver::OpenTabsUIDelegate* open_tabs_delegate_;  // Weak.
+  sync_sessions::OpenTabsUIDelegate* open_tabs_delegate_;  // Weak.
 
   // Accelerator for reopening last closed tab.
   ui::Accelerator reopen_closed_tab_accelerator_;