Fix the process creation problem. This forces transitions between...

chrome/browser/tab_contents/render_view_host_manager.h

Index: chrome/browser/tab_contents/render_view_host_manager.h
===================================================================
--- chrome/browser/tab_contents/render_view_host_manager.h	(revision 13870)
+++ chrome/browser/tab_contents/render_view_host_manager.h	(working copy)
@@ -186,9 +186,11 @@
   bool ShouldTransitionCrossSite();
 
   // Returns true if the two navigation entries are incompatible in some way
-  // other than site instances. This will cause us to swap RenderViewHosts even
-  // if the site instances are the same. Either of the entries may be NULL.
-  bool ShouldSwapRenderViewsForNavigation(
+  // other than site instances. This will cause us to swap RenderViewHosts
+  // (and hence RenderProcessHosts) even if the site instance would otherwise
+  // be the same. It also forces new SiteInstances for these transitions.

[Charlie Reis, 2009/04/16 22:00:56]

"new SiteInstances and BrowsingInstances for these transitions."

Maybe also point out examples of when this is this case?  DOM UI pages, and soon
extensions (according to Matt).

+  // Either of the entries may be NULL.
+  bool ShouldSwapProcessesForNavigation(
       const NavigationEntry* cur_entry,
       const NavigationEntry* new_entry) const;