Banish boilerplate. Profile-keyed API factory for extension API classes.

chrome/browser/extensions/api/tabs/tabs_windows_api.h

Index: chrome/browser/extensions/api/tabs/tabs_windows_api.h
diff --git a/chrome/browser/extensions/api/tabs/tabs_windows_api.h b/chrome/browser/extensions/api/tabs/tabs_windows_api.h
index ae24d5c8b34a4dd7e8907810a69af5b6d90cede2..cebc99232d747822542e4d9765e8b8d24422c366 100644
--- a/chrome/browser/extensions/api/tabs/tabs_windows_api.h
+++ b/chrome/browser/extensions/api/tabs/tabs_windows_api.h
@@ -6,6 +6,7 @@
 #define CHROME_BROWSER_EXTENSIONS_API_TABS_TABS_WINDOWS_API_H_
 
 #include "base/memory/scoped_ptr.h"
+#include "chrome/browser/extensions/api/profile_keyed_api_factory.h"
 #include "chrome/browser/extensions/event_router.h"
 #include "chrome/browser/profiles/profile_keyed_service.h"
 
@@ -36,6 +37,16 @@ class TabsWindowsAPI : public ProfileKeyedService,
   scoped_ptr<WindowsEventRouter> windows_event_router_;
 };
 
+template <>
+struct ProfileKeyedAPIFactoryTraits<TabsWindowsAPI>
+    : public DefaultProfileKeyedAPIFactoryTraits {
+  static const char* name() {
+    return "TabsWindowsAPI";
+  }
+
+  static const bool kServiceIsNULLWhileTesting = true;
+};
+
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_TABS_TABS_WINDOWS_API_H_