Make ExtensionService use ExtensionSet.

chrome/browser/background/background_application_list_model_unittest.cc

Index: chrome/browser/background/background_application_list_model_unittest.cc
diff --git a/chrome/browser/background/background_application_list_model_unittest.cc b/chrome/browser/background/background_application_list_model_unittest.cc
index f3fff07e121f13098aaba0be62edf88fe7f9a219..ac08586825ac53ee8c83ea4c5e102dcafd6a8c82 100644
--- a/chrome/browser/background/background_application_list_model_unittest.cc
+++ b/chrome/browser/background/background_application_list_model_unittest.cc
@@ -60,8 +60,11 @@ static scoped_refptr<Extension> CreateExtension(const std::string& name,
   }
   std::string error;
   scoped_refptr<Extension> extension = Extension::Create(
-      bogus_file_path().AppendASCII(name), Extension::INVALID, manifest,
-      Extension::STRICT_ERROR_CHECKS, &error);
+      bogus_file_path().AppendASCII(name),
+      Extension::INVALID,
+      manifest,
+      Extension::STRICT_ERROR_CHECKS,
+      &error);
   // Cannot ASSERT_* here because that attempts an illegitimate return.
   // Cannot EXPECT_NE here because that assumes non-pointers unlike EXPECT_EQ
   EXPECT_TRUE(extension.get() != NULL) << error;