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

chrome/browser/extensions/extension_apitest.h

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_APITEST_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_APITEST_H_
 #pragma once
 
 #include <deque>
 #include <string>
@@ skipping 21 matching lines @@
   // received.
   class ResultCatcher : public NotificationObserver {
    public:
     ResultCatcher();
     ~ResultCatcher();
 
     // Pumps the UI loop until a notification is received that an API test
     // succeeded or failed. Returns true if the test succeeded, false otherwise.
     bool GetNextResult();
 
+    void RestrictToProfile(Profile* profile) { profile_restriction_ = profile; }
+
     const std::string& message() { return message_; }
 
    private:
     virtual void Observe(NotificationType type,
                          const NotificationSource& source,
                          const NotificationDetails& details);
 
     NotificationRegistrar registrar_;
 
     // A sequential list of pass/fail notifications from the test extension(s).
     std::deque<bool> results_;
 
     // If it failed, what was the error message?
     std::deque<std::string> messages_;
     std::string message_;
+
+    // If non-NULL, we will listen to events from this profile only.
+    Profile* profile_restriction_;
   };
 
   // Load |extension_name| and wait for pass / fail notification.
   // |extension_name| is a directory in "test/data/extensions/api_test".
   bool RunExtensionTest(const char* extension_name);
 
   // Load |extension_name|, load page at path |subtest_page| under the
   // extension, and wait for pass / fail notification.  |extension_name|
   // is a directory in "test/data/extensions/api_test".
   bool RunExtensionSubtest(const char* extension_name,
                            const std::string& subtest_page);
 
   // Test that exactly one extension loaded.  If so, return a pointer to
   // the extension.  If not, return NULL and set message_.
   Extension* GetSingleLoadedExtension();
 
   // All extensions tested by ExtensionApiTest are in the "api_test" dir.
   virtual void SetUpCommandLine(CommandLine* command_line);
 
   // If it failed, what was the error message?
   std::string message_;
 
  private:
   bool RunExtensionTestImpl(const char* extension_name,
                             const std::string& test_page);
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_APITEST_H_