Test extension reloading behavior.

chrome/browser/extensions/extension_process_manager.h

Index: chrome/browser/extensions/extension_process_manager.h
diff --git a/chrome/browser/extensions/extension_process_manager.h b/chrome/browser/extensions/extension_process_manager.h
index d0c747cbb49eab5ca7824eec257f71d1a930ed70..7934df4e44cee2630d7f65c60042116a964b68e7 100644
--- a/chrome/browser/extensions/extension_process_manager.h
+++ b/chrome/browser/extensions/extension_process_manager.h
@@ -22,6 +22,7 @@ class GURL;
 class Profile;
 
 namespace content {
+class RenderProcessHostFactory;
 class RenderViewHost;
 class SiteInstance;
 };
@@ -138,6 +139,12 @@ class ExtensionProcessManager : public content::NotificationObserver {
   // onSuspendCanceled() event to it.
   void CancelSuspend(const extensions::Extension* extension);
 
+  // Retrieves the base SiteInstance that is used to create the SiteInstances
+  // for all extensions in this profile.
+  content::SiteInstance* site_instance_for_test() {
+    return site_instance_.get();
+  }
+
  protected:
   explicit ExtensionProcessManager(Profile* profile);