Consolidate manifest handler registration.

chrome/browser/extensions/extension_prefs_unittest.h

Index: chrome/browser/extensions/extension_prefs_unittest.h
diff --git a/chrome/browser/extensions/extension_prefs_unittest.h b/chrome/browser/extensions/extension_prefs_unittest.h
index 86b622bffe85993b2dc1291822efd56f3c5c9ee2..c199d198cb52ca0ef3692f7e3f40ff6a0cd867b3 100644
--- a/chrome/browser/extensions/extension_prefs_unittest.h
+++ b/chrome/browser/extensions/extension_prefs_unittest.h
@@ -7,7 +7,6 @@
 
 #include "base/message_loop.h"
 #include "chrome/browser/extensions/test_extension_prefs.h"
-#include "chrome/common/extensions/extension_unittest.h"
 #include "content/public/test/test_browser_thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -21,7 +20,7 @@ namespace extensions {
 class Extension;
 
 // Base class for extension preference-related unit tests.
-class ExtensionPrefsTest : public ExtensionTest {
+class ExtensionPrefsTest : public testing::Test {
  public:
   ExtensionPrefsTest();
   virtual ~ExtensionPrefsTest();