Add support for a "split" incognito behavior for extensions.

chrome/renderer/extensions/extension_process_bindings.h

Index: chrome/renderer/extensions/extension_process_bindings.h
diff --git a/chrome/renderer/extensions/extension_process_bindings.h b/chrome/renderer/extensions/extension_process_bindings.h
index d64b425556e97d73059d927aa41578f2241a01a9..8202c46c32ae8c331cec424f2b79e3758ab910d1 100644
--- a/chrome/renderer/extensions/extension_process_bindings.h
+++ b/chrome/renderer/extensions/extension_process_bindings.h
@@ -49,10 +49,12 @@ class ExtensionProcessBindings {
 
   // Sets whether incognito is enabled for a particular extension.
   static void SetIncognitoEnabled(const std::string& extension_id,
-                                  bool enabled);
+                                  bool enabled,
+                                  bool incognito_split_mode);
 
-  // Checks whether incognito is enabled for a particular extension.
-  static bool HasIncognitoEnabled(const std::string& extension_id);
+  // Checks whether the given extension can see events/data from another
+  // profile (normal to incognito or vice versa).
+  static bool AllowCrossProfile(const std::string& extension_id);
 
   // Check if the extension in the currently running context has permission to
   // access the given extension function. Must be called with a valid V8