Getting rid of more webview memory leaks.

components/guest_view/common/guest_view_messages.h

Index: components/guest_view/common/guest_view_messages.h
diff --git a/components/guest_view/common/guest_view_messages.h b/components/guest_view/common/guest_view_messages.h
index fb68ed4ab2dc0917e5e7617b5773f61fb578df91..bc0061d650020eb990c7fdd75201ecf5c7c03b28 100644
--- a/components/guest_view/common/guest_view_messages.h
+++ b/components/guest_view/common/guest_view_messages.h
@@ -35,6 +35,12 @@ IPC_MESSAGE_CONTROL3(GuestViewHostMsg_AttachGuest,
                      base::DictionaryValue /* attach_params */)
 
 // Sent by the renderer when a GuestView (identified by |view_instance_id|) has
+// been created in JavaScript.
+IPC_MESSAGE_CONTROL2(GuestViewHostMsg_ViewCreated,
+                     int /* view_instance_id */,
+                     std::string /* view_type */)
+
+// Sent by the renderer when a GuestView (identified by |view_instance_id|) has
 // been garbage collected in JavaScript.
 IPC_MESSAGE_CONTROL1(GuestViewHostMsg_ViewGarbageCollected,
                      int /* view_instance_id */)