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 7ca8eaa8434a7adc0e0f63396055ef603c2b02c9..239c6c82257b54bbfd5dd888a1935ebda376cee4 100644
--- a/content/common/view_messages.h
+++ b/content/common/view_messages.h
@@ -370,6 +370,13 @@ 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)