Fix a crash in PageActionImageView when extensions are reloaded due to incognito settings changing.

chrome/browser/extensions/extension_service_unittest.h

Index: chrome/browser/extensions/extension_service_unittest.h
===================================================================
--- chrome/browser/extensions/extension_service_unittest.h	(revision 108847)
+++ chrome/browser/extensions/extension_service_unittest.h	(working copy)
@@ -15,6 +15,8 @@
 #include "content/test/test_browser_thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+class TestingProfile;
+
 class ExtensionServiceTestBase : public testing::Test {
  public:
   ExtensionServiceTestBase();
@@ -29,6 +31,8 @@
 
   void InitializeEmptyExtensionService();
 
+  void InitializeExtensionProcessManager();
+
   void InitializeExtensionServiceWithUpdater();
 
   void InitializeRequestContext();
@@ -45,7 +49,7 @@
   void InitializeExtensionServiceHelper(bool autoupdate_enabled);
 
   ScopedTempDir temp_dir_;
-  scoped_ptr<Profile> profile_;
+  scoped_ptr<TestingProfile> profile_;
   FilePath extensions_install_dir_;
   FilePath data_dir_;
   // Owned by |profile_|.