Create window in a new BrowsingInstance when opening a link in a new process.

content/common/view_messages.h

Index: content/common/view_messages.h
diff --git a/content/common/view_messages.h b/content/common/view_messages.h
index cac159bf6477b54ab5076f4bdd7f5a33b825541c..1c8c7029fdf2e847cb0f4b987b5ebdea55016206 100644
--- a/content/common/view_messages.h
+++ b/content/common/view_messages.h
@@ -381,6 +381,13 @@ IPC_STRUCT_BEGIN(ViewHostMsg_CreateWindow_Params)
   // The security origin of the frame initiating the open.
   IPC_STRUCT_MEMBER(std::string, opener_security_origin)
 
+  // Whether the opener will be suppressed in the new window, in which case
+  // scripting the new window is not allowed.
+  IPC_STRUCT_MEMBER(bool, opener_suppressed)
+
+  // Whether the window should be opened in the foreground, background, etc.
+  IPC_STRUCT_MEMBER(WindowOpenDisposition, disposition)
+
   // The URL that will be loaded in the new window (empty if none has been
   // sepcified).
   IPC_STRUCT_MEMBER(GURL, target_url)