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

content/renderer/render_view_impl.h

Index: content/renderer/render_view_impl.h
diff --git a/content/renderer/render_view_impl.h b/content/renderer/render_view_impl.h
index 6c60ae33157055cf569cce2545ec1a7d30dbb37d..6a5221f562c9c489a797ecb717ead38052af203a 100644
--- a/content/renderer/render_view_impl.h
+++ b/content/renderer/render_view_impl.h
@@ -469,6 +469,8 @@ class RenderViewImpl : public RenderWidget,
                                          const WebKit::WebURL& from);
   virtual void didCreateDataSource(WebKit::WebFrame* frame,
                                    WebKit::WebDataSource* datasource);
+  virtual void didSetNextNavigationPolicy(
+      WebKit::WebNavigationPolicy policy);
   virtual void didStartProvisionalLoad(WebKit::WebFrame* frame);
   virtual void didReceiveServerRedirectForProvisionalLoad(
       WebKit::WebFrame* frame);
@@ -1023,6 +1025,10 @@ class RenderViewImpl : public RenderWidget,
   // decidePolicyForNavigation for details.
   bool opener_suppressed_;
 
+  // The disposition for the window that is about to be opened.
+  // Set to WebNavigationPolicyIgnore otherwise.
+  WebKit::WebNavigationPolicy new_window_navigation_policy_;
+
   // If we are handling a top-level client-side redirect, this tracks the URL
   // of the page that initiated it. Specifically, when a load is committed this
   // is used to determine if that load originated from a client-side redirect.