Rewrite scoped_ptr<T>(NULL) to use the default ctor in chrome/.

chrome/browser/extensions/external_provider_impl.cc

Index: chrome/browser/extensions/external_provider_impl.cc
diff --git a/chrome/browser/extensions/external_provider_impl.cc b/chrome/browser/extensions/external_provider_impl.cc
index bde28f2eef4dc6fd3bda41db20fdfaeae5e1b2d5..5939375c2f12592878fbae914327d1cae612ed80 100644
--- a/chrome/browser/extensions/external_provider_impl.cc
+++ b/chrome/browser/extensions/external_provider_impl.cc
@@ -63,22 +63,20 @@ const char ExternalProviderImpl::kIsBookmarkApp[] = "is_bookmark_app";
 const char ExternalProviderImpl::kIsFromWebstore[] = "is_from_webstore";
 const char ExternalProviderImpl::kKeepIfPresent[] = "keep_if_present";
 
-ExternalProviderImpl::ExternalProviderImpl(
-    VisitorInterface* service,
-    ExternalLoader* loader,
-    Profile* profile,
-    Manifest::Location crx_location,
-    Manifest::Location download_location,
-    int creation_flags)
-  : crx_location_(crx_location),
-    download_location_(download_location),
-    service_(service),
-    prefs_(NULL),
-    ready_(false),
-    loader_(loader),
-    profile_(profile),
-    creation_flags_(creation_flags),
-    auto_acknowledge_(false) {
+ExternalProviderImpl::ExternalProviderImpl(VisitorInterface* service,
+                                           ExternalLoader* loader,
+                                           Profile* profile,
+                                           Manifest::Location crx_location,
+                                           Manifest::Location download_location,
+                                           int creation_flags)
+    : crx_location_(crx_location),
+      download_location_(download_location),
+      service_(service),
+      ready_(false),
+      loader_(loader),
+      profile_(profile),
+      creation_flags_(creation_flags),
+      auto_acknowledge_(false) {
   loader_->Init(this);
 }