Make Blacklist::IsBlacklist asynchronous (it will need to be for safe

chrome/browser/extensions/extension_browsertest.h

Index: chrome/browser/extensions/extension_browsertest.h
diff --git a/chrome/browser/extensions/extension_browsertest.h b/chrome/browser/extensions/extension_browsertest.h
index b1e82a0b1a999f6dbd8402fbfa603ab36b55c32f..03743b21b12ca0ae7ef2e6d214695a69c30b2955 100644
--- a/chrome/browser/extensions/extension_browsertest.h
+++ b/chrome/browser/extensions/extension_browsertest.h
@@ -12,6 +12,8 @@
 #include "base/file_path.h"
 #include "base/files/scoped_temp_dir.h"
 #include "chrome/browser/extensions/extension_host.h"
+#include "chrome/browser/extensions/extension_system.h"
+#include "chrome/browser/ui/browser.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/feature_switch.h"
 #include "chrome/common/extensions/features/feature.h"
@@ -21,7 +23,9 @@
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/web_contents.h"
 
+class ExtensionService;
 class ExtensionProcessManager;
+class Profile;
 
 // Base class for extension browser tests. Provides utilities for loading,
 // unloading, and installing extensions.
@@ -50,6 +54,12 @@ class ExtensionBrowserTest : virtual public InProcessBrowserTest,
   ExtensionBrowserTest();
   virtual ~ExtensionBrowserTest();
 
+  // Useful accessors.
+  Profile* profile() { return browser()->profile(); }
+  ExtensionService* extension_service() {
+    return extensions::ExtensionSystem::Get(profile())->extension_service();
+  }
+
   // InProcessBrowserTest
   virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE;