Run clang-modernize -use-nullptr over src/extensions/.

extensions/common/manifest.cc

Index: extensions/common/manifest.cc
diff --git a/extensions/common/manifest.cc b/extensions/common/manifest.cc
index f072488b7e16bd28cfa6142ea140462a4db4c3bf..8ce24a49ee6dfbd06515461e6c24db5dfcb4002a 100644
--- a/extensions/common/manifest.cc
+++ b/extensions/common/manifest.cc
@@ -117,10 +117,10 @@ Manifest::Manifest(Location location, scoped_ptr<base::DictionaryValue> value)
   } else if (value_->HasKey(keys::kExport)) {
     type_ = TYPE_SHARED_MODULE;
   } else if (value_->HasKey(keys::kApp)) {
-    if (value_->Get(keys::kWebURLs, NULL) ||
-        value_->Get(keys::kLaunchWebURL, NULL)) {
+    if (value_->Get(keys::kWebURLs, nullptr) ||
+        value_->Get(keys::kLaunchWebURL, nullptr)) {
       type_ = TYPE_HOSTED_APP;
-    } else if (value_->Get(keys::kPlatformAppBackground, NULL)) {
+    } else if (value_->Get(keys::kPlatformAppBackground, nullptr)) {
       type_ = TYPE_PLATFORM_APP;
     } else {
       type_ = TYPE_LEGACY_PACKAGED_APP;
@@ -153,7 +153,7 @@ bool Manifest::ValidateManifest(
            feature_names.begin();
        feature_name != feature_names.end(); ++feature_name) {
     // Use Get instead of HasKey because the former uses path expansion.
-    if (!value_->Get(*feature_name, NULL))
+    if (!value_->Get(*feature_name, nullptr))
       continue;
 
     Feature* feature = manifest_feature_provider->GetFeature(*feature_name);
@@ -181,7 +181,7 @@ bool Manifest::HasKey(const std::string& key) const {
 }
 
 bool Manifest::HasPath(const std::string& path) const {
-  base::Value* ignored = NULL;
+  base::Value* ignored = nullptr;
   return CanAccessPath(path) && value_->Get(path, &ignored);
 }