Change namespace from ui to gfx for NativePixmap related code

content/browser/browser_main_loop.h

Index: content/browser/browser_main_loop.h
diff --git a/content/browser/browser_main_loop.h b/content/browser/browser_main_loop.h
index 4ebf478bbb46bc32c2ee9f7dcd491f131c82bed5..f35fc3ff7877a5e36ab39f8ccbea9e8e4063a8a6 100644
--- a/content/browser/browser_main_loop.h
+++ b/content/browser/browser_main_loop.h
@@ -68,9 +68,9 @@ class NetworkChangeNotifier;
 }  // namespace net
 
 #if defined(USE_OZONE)
-namespace ui {
+namespace gfx {
 class ClientNativePixmapFactory;
-}  // namespace ui
+}  // namespace gfx
 #endif
 
 namespace content {
@@ -306,7 +306,7 @@ class CONTENT_EXPORT BrowserMainLoop {
   std::unique_ptr<media::DeviceMonitorMac> device_monitor_mac_;
 #endif
 #if defined(USE_OZONE)
-  std::unique_ptr<ui::ClientNativePixmapFactory> client_native_pixmap_factory_;
+  std::unique_ptr<gfx::ClientNativePixmapFactory> client_native_pixmap_factory_;
 #endif
 
   std::unique_ptr<LoaderDelegateImpl> loader_delegate_;