[OLD ATTEMPT, DO NOT REVIEW] mustash: Enable connections to mus from the Chrome renderer

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index 273f864216521154bca581126385875967bd4a02..2b4349f21315b2c924a24c5c2d0f6b63362202a1 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -134,6 +134,7 @@
 #endif
 
 #if defined(MOJO_SHELL_CLIENT)
+#include "content/browser/mus_util.h"
 #include "content/browser/web_contents/web_contents_view_mus.h"
 #include "content/public/common/mojo_shell_connection.h"
 #endif
@@ -534,6 +535,7 @@ WebContentsImpl* WebContentsImpl::CreateWithOpener(
     // bit to true.
     new_contents->is_subframe_ = true;
   }
+
   new_contents->Init(params);
   return new_contents;
 }
@@ -1379,8 +1381,11 @@ void WebContentsImpl::Init(const WebContents::CreateParams& params) {
   if (MojoShellConnection::Get() &&
       base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kUseMusInRenderer)) {
-    view_.reset(new WebContentsViewMus(this, view_.Pass(),
-                                       &render_view_host_delegate_view_));
+    mus::Window* window = GetMusWindow(params.context);
+    if (window) {
+      view_.reset(new WebContentsViewMus(this, window, view_.Pass(),
+                                         &render_view_host_delegate_view_));
+    }
   }
 #endif