PlzNavigate: properly set the initiator of the navigation

content/common/navigation_params.h

Index: content/common/navigation_params.h
diff --git a/content/common/navigation_params.h b/content/common/navigation_params.h
index 1a09b3332381818ea92a7535aaac82bd37d081eb..1ff2d6dcb9372f7423f44619f2ee970812c02e35 100644
--- a/content/common/navigation_params.h
+++ b/content/common/navigation_params.h
@@ -20,6 +20,7 @@
 #include "content/public/common/request_context_type.h"
 #include "ui/base/page_transition_types.h"
 #include "url/gurl.h"
+#include "url/origin.h"
 
 namespace content {
 
@@ -144,7 +145,8 @@ struct CONTENT_EXPORT BeginNavigationParams {
                         int load_flags,
                         bool has_user_gesture,
                         bool skip_service_worker,
-                        RequestContextType request_context_type);
+                        RequestContextType request_context_type,
+                        const url::Origin& initiator);
   BeginNavigationParams(const BeginNavigationParams& other);
 
   // Additional HTTP request headers.
@@ -161,6 +163,11 @@ struct CONTENT_EXPORT BeginNavigationParams {
 
   // Indicates the request context type.
   RequestContextType request_context_type;
+
+  // Indicates the initiator of the request. Normally this is the top origin of

[Mike West, 2016/06/27 12:10:08]

What is a "top origin"?

[clamy, 2016/06/27 13:36:15]

Clarified the comment.

+  // the document. In auxilliary navigations, this is the origin of the
+  // document that triggered the navigation.
+  url::Origin initiator;
 };
 
 // Provided by the browser -----------------------------------------------------