Adding MimeHandlerView.

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 6ccb9f5995949069dbeadc97faa76fd507a3ac9b..d85a932fc388c1db312c9e6966abaad532b2400e 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -1334,8 +1334,9 @@ blink::WebPlugin* RenderFrameImpl::createPlugin(
     const blink::WebPluginParams& params) {
   DCHECK_EQ(frame_, frame);
   blink::WebPlugin* plugin = NULL;
+  int instance_id;
   if (GetContentClient()->renderer()->OverrideCreatePlugin(
-          this, frame, params, &plugin)) {
+          this, frame, params, &instance_id, &plugin)) {
     return plugin;
   }
 
@@ -1355,8 +1356,11 @@ blink::WebPlugin* RenderFrameImpl::createPlugin(
     return NULL;
 
   if (info.type == content::WebPluginInfo::PLUGIN_TYPE_BROWSER_PLUGIN) {
-    return render_view_->GetBrowserPluginManager()->CreateBrowserPlugin(
+    //printf("Creating auto_navigate_ stuff\n");
+    BrowserPlugin* p = render_view_->GetBrowserPluginManager()->CreateBrowserPlugin(
         render_view_.get(), frame, true);
+    p->AttachToPlugin(instance_id);
+    return p;
   }