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

chrome/browser/extensions/extension_process_manager_unittest.cc

Index: chrome/browser/extensions/extension_process_manager_unittest.cc
diff --git a/chrome/browser/extensions/extension_process_manager_unittest.cc b/chrome/browser/extensions/extension_process_manager_unittest.cc
index cf2d5d97b9748307f2daeceb4e0a8891ae1956af..f73c0b015d8ac77983b389fc9abc8306a8c5f12e 100644
--- a/chrome/browser/extensions/extension_process_manager_unittest.cc
+++ b/chrome/browser/extensions/extension_process_manager_unittest.cc
@@ -33,11 +33,11 @@ TEST_F(ExtensionProcessManagerTest, ProcessGrouping) {
   // functionality.  This means we can get away with a NULL UserScriptMaster.
   TestingProfile profile1;
   scoped_ptr<ExtensionProcessManager> manager1(
-      new ExtensionProcessManager(&profile1));
+      ExtensionProcessManager::Create(&profile1));
 
   TestingProfile profile2;
   scoped_ptr<ExtensionProcessManager> manager2(
-      new ExtensionProcessManager(&profile2));
+      ExtensionProcessManager::Create(&profile2));
 
   // Extensions with common origins ("scheme://id/") should be grouped in the
   // same SiteInstance.