Create a RegisterViewAssociate method in ViewManager

services/ui/launcher/launch_instance.h

Index: services/ui/launcher/launch_instance.h
diff --git a/services/ui/launcher/launch_instance.h b/services/ui/launcher/launch_instance.h
index 644f31dbb817a44cc35e0c8f5f037bbbdb9eeb69..948a09d3553dc490749c5d115ecb9fa05150205b 100644
--- a/services/ui/launcher/launch_instance.h
+++ b/services/ui/launcher/launch_instance.h
@@ -24,11 +24,14 @@ class LaunchInstance : public mojo::NativeViewportEventDispatcher {
  public:
   LaunchInstance(mojo::ApplicationImpl* app_impl,
                  const std::string& app_url,
+                 const std::string& view_associates_urls,
                  const base::Closure& shutdown_callback);
   ~LaunchInstance() override;
 
   void Launch();
 
+  void OnViewAssociateConnectionError();
+
  private:
   // |NativeViewportEventDispatcher|:
   void OnEvent(mojo::EventPtr event,
@@ -45,6 +48,7 @@ class LaunchInstance : public mojo::NativeViewportEventDispatcher {
 
   mojo::ApplicationImpl* app_impl_;
   std::string app_url_;
+  std::string view_associate_urls_;
   base::Closure shutdown_callback_;
 
   mojo::gfx::composition::CompositorPtr compositor_;
@@ -56,6 +60,8 @@ class LaunchInstance : public mojo::NativeViewportEventDispatcher {
 
   std::unique_ptr<LauncherViewTree> view_tree_;
 
+  std::vector<mojo::ui::ViewAssociateOwnerPtr> view_associate_owners_;
+
   mojo::ui::ViewOwnerPtr client_view_owner_;
 
   DISALLOW_COPY_AND_ASSIGN(LaunchInstance);