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

extensions/browser/api/declarative_webrequest/webrequest_action.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "extensions/browser/api/declarative_webrequest/webrequest_action.h"
 
 #include <limits>
 
 #include "base/lazy_instance.h"
 #include "base/logging.h"
@@ skipping 108 matching lines @@
     std::string* error,
     bool* bad_message) {
   return scoped_refptr<const WebRequestAction>(new T);
 }
 
 scoped_refptr<const WebRequestAction> CreateRedirectRequestAction(
     const std::string& instance_type,
     const base::Value* value,
     std::string* error,
     bool* bad_message) {
-  const base::DictionaryValue* dict = NULL;
+  const base::DictionaryValue* dict = nullptr;
   CHECK(value->GetAsDictionary(&dict));
   std::string redirect_url_string;
   INPUT_FORMAT_VALIDATE(
       dict->GetString(keys::kRedirectUrlKey, &redirect_url_string));
   GURL redirect_url(redirect_url_string);
   return scoped_refptr<const WebRequestAction>(
       new WebRequestRedirectAction(redirect_url));
 }
 
 scoped_refptr<const WebRequestAction> CreateRedirectRequestByRegExAction(
     const std::string& instance_type,
     const base::Value* value,
     std::string* error,
     bool* bad_message) {
-  const base::DictionaryValue* dict = NULL;
+  const base::DictionaryValue* dict = nullptr;
   CHECK(value->GetAsDictionary(&dict));
   std::string from;
   std::string to;
   INPUT_FORMAT_VALIDATE(dict->GetString(keys::kFromKey, &from));
   INPUT_FORMAT_VALIDATE(dict->GetString(keys::kToKey, &to));
 
   to = WebRequestRedirectByRegExAction::PerlToRe2Style(to);
 
   RE2::Options options;
   options.set_case_sensitive(false);
   scoped_ptr<RE2> from_pattern(new RE2(from, options));
 
   if (!from_pattern->ok()) {
     *error = "Invalid pattern '" + from + "' -> '" + to + "'";
-    return scoped_refptr<const WebRequestAction>(NULL);
+    return scoped_refptr<const WebRequestAction>(nullptr);
   }
   return scoped_refptr<const WebRequestAction>(
       new WebRequestRedirectByRegExAction(from_pattern.Pass(), to));
 }
 
 scoped_refptr<const WebRequestAction> CreateSetRequestHeaderAction(
     const std::string& instance_type,
     const base::Value* json_value,
     std::string* error,
     bool* bad_message) {
-  const base::DictionaryValue* dict = NULL;
+  const base::DictionaryValue* dict = nullptr;
   CHECK(json_value->GetAsDictionary(&dict));
   std::string name;
   std::string value;
   INPUT_FORMAT_VALIDATE(dict->GetString(keys::kNameKey, &name));
   INPUT_FORMAT_VALIDATE(dict->GetString(keys::kValueKey, &value));
   if (!net::HttpUtil::IsValidHeaderName(name)) {
     *error = extension_web_request_api_constants::kInvalidHeaderName;
-    return scoped_refptr<const WebRequestAction>(NULL);
+    return scoped_refptr<const WebRequestAction>(nullptr);
   }
   if (!net::HttpUtil::IsValidHeaderValue(value)) {
     *error = ErrorUtils::FormatErrorMessage(
         extension_web_request_api_constants::kInvalidHeaderValue, name);
-    return scoped_refptr<const WebRequestAction>(NULL);
+    return scoped_refptr<const WebRequestAction>(nullptr);
   }
   return scoped_refptr<const WebRequestAction>(
       new WebRequestSetRequestHeaderAction(name, value));
 }
 
 scoped_refptr<const WebRequestAction> CreateRemoveRequestHeaderAction(
     const std::string& instance_type,
     const base::Value* value,
     std::string* error,
     bool* bad_message) {
-  const base::DictionaryValue* dict = NULL;
+  const base::DictionaryValue* dict = nullptr;
   CHECK(value->GetAsDictionary(&dict));
   std::string name;
   INPUT_FORMAT_VALIDATE(dict->GetString(keys::kNameKey, &name));
   if (!net::HttpUtil::IsValidHeaderName(name)) {
     *error = extension_web_request_api_constants::kInvalidHeaderName;
-    return scoped_refptr<const WebRequestAction>(NULL);
+    return scoped_refptr<const WebRequestAction>(nullptr);
   }
   return scoped_refptr<const WebRequestAction>(
       new WebRequestRemoveRequestHeaderAction(name));
 }
 
 scoped_refptr<const WebRequestAction> CreateAddResponseHeaderAction(
     const std::string& instance_type,
     const base::Value* json_value,
     std::string* error,
     bool* bad_message) {
-  const base::DictionaryValue* dict = NULL;
+  const base::DictionaryValue* dict = nullptr;
   CHECK(json_value->GetAsDictionary(&dict));
   std::string name;
   std::string value;
   INPUT_FORMAT_VALIDATE(dict->GetString(keys::kNameKey, &name));
   INPUT_FORMAT_VALIDATE(dict->GetString(keys::kValueKey, &value));
   if (!net::HttpUtil::IsValidHeaderName(name)) {
     *error = extension_web_request_api_constants::kInvalidHeaderName;
-    return scoped_refptr<const WebRequestAction>(NULL);
+    return scoped_refptr<const WebRequestAction>(nullptr);
   }
   if (!net::HttpUtil::IsValidHeaderValue(value)) {
     *error = ErrorUtils::FormatErrorMessage(
         extension_web_request_api_constants::kInvalidHeaderValue, name);
-    return scoped_refptr<const WebRequestAction>(NULL);
+    return scoped_refptr<const WebRequestAction>(nullptr);
   }
   return scoped_refptr<const WebRequestAction>(
       new WebRequestAddResponseHeaderAction(name, value));
 }
 
 scoped_refptr<const WebRequestAction> CreateRemoveResponseHeaderAction(
     const std::string& instance_type,
     const base::Value* json_value,
     std::string* error,
     bool* bad_message) {
-  const base::DictionaryValue* dict = NULL;
+  const base::DictionaryValue* dict = nullptr;
   CHECK(json_value->GetAsDictionary(&dict));
   std::string name;
   std::string value;
   INPUT_FORMAT_VALIDATE(dict->GetString(keys::kNameKey, &name));
   bool has_value = dict->GetString(keys::kValueKey, &value);
   if (!net::HttpUtil::IsValidHeaderName(name)) {
     *error = extension_web_request_api_constants::kInvalidHeaderName;
-    return scoped_refptr<const WebRequestAction>(NULL);
+    return scoped_refptr<const WebRequestAction>(nullptr);
   }
   if (has_value && !net::HttpUtil::IsValidHeaderValue(value)) {
     *error = ErrorUtils::FormatErrorMessage(
         extension_web_request_api_constants::kInvalidHeaderValue, name);
-    return scoped_refptr<const WebRequestAction>(NULL);
+    return scoped_refptr<const WebRequestAction>(nullptr);
   }
   return scoped_refptr<const WebRequestAction>(
       new WebRequestRemoveResponseHeaderAction(name, value, has_value));
 }
 
 scoped_refptr<const WebRequestAction> CreateIgnoreRulesAction(
     const std::string& instance_type,
     const base::Value* value,
     std::string* error,
     bool* bad_message) {
-  const base::DictionaryValue* dict = NULL;
+  const base::DictionaryValue* dict = nullptr;
   CHECK(value->GetAsDictionary(&dict));
   bool has_parameter = false;
   int minimum_priority = std::numeric_limits<int>::min();
   std::string ignore_tag;
   if (dict->HasKey(keys::kLowerPriorityThanKey)) {
     INPUT_FORMAT_VALIDATE(
         dict->GetInteger(keys::kLowerPriorityThanKey, &minimum_priority));
     has_parameter = true;
   }
   if (dict->HasKey(keys::kHasTagKey)) {
     INPUT_FORMAT_VALIDATE(dict->GetString(keys::kHasTagKey, &ignore_tag));
     has_parameter = true;
   }
   if (!has_parameter) {
     *error = kIgnoreRulesRequiresParameterError;
-    return scoped_refptr<const WebRequestAction>(NULL);
+    return scoped_refptr<const WebRequestAction>(nullptr);
   }
   return scoped_refptr<const WebRequestAction>(
       new WebRequestIgnoreRulesAction(minimum_priority, ignore_tag));
 }
 
 scoped_refptr<const WebRequestAction> CreateRequestCookieAction(
     const std::string& instance_type,
     const base::Value* value,
     std::string* error,
     bool* bad_message) {
   using extension_web_request_api_helpers::RequestCookieModification;
 
-  const base::DictionaryValue* dict = NULL;
+  const base::DictionaryValue* dict = nullptr;
   CHECK(value->GetAsDictionary(&dict));
 
   linked_ptr<RequestCookieModification> modification(
       new RequestCookieModification);
 
   // Get modification type.
   if (instance_type == keys::kAddRequestCookieType)
     modification->type = helpers::ADD;
   else if (instance_type == keys::kEditRequestCookieType)
     modification->type = helpers::EDIT;
   else if (instance_type == keys::kRemoveRequestCookieType)
     modification->type = helpers::REMOVE;
   else
     INPUT_FORMAT_VALIDATE(false);
 
   // Get filter.
   if (modification->type == helpers::EDIT ||
       modification->type == helpers::REMOVE) {
-    const base::DictionaryValue* filter = NULL;
+    const base::DictionaryValue* filter = nullptr;
     INPUT_FORMAT_VALIDATE(dict->GetDictionary(keys::kFilterKey, &filter));
     modification->filter = ParseRequestCookie(filter);
   }
 
   // Get new value.
   if (modification->type == helpers::ADD) {
-    const base::DictionaryValue* value = NULL;
+    const base::DictionaryValue* value = nullptr;
     INPUT_FORMAT_VALIDATE(dict->GetDictionary(keys::kCookieKey, &value));
     modification->modification = ParseRequestCookie(value);
   } else if (modification->type == helpers::EDIT) {
-    const base::DictionaryValue* value = NULL;
+    const base::DictionaryValue* value = nullptr;
     INPUT_FORMAT_VALIDATE(dict->GetDictionary(keys::kModificationKey, &value));
     modification->modification = ParseRequestCookie(value);
   }
 
   return scoped_refptr<const WebRequestAction>(
       new WebRequestRequestCookieAction(modification));
 }
 
 scoped_refptr<const WebRequestAction> CreateResponseCookieAction(
     const std::string& instance_type,
     const base::Value* value,
     std::string* error,
     bool* bad_message) {
   using extension_web_request_api_helpers::ResponseCookieModification;
 
-  const base::DictionaryValue* dict = NULL;
+  const base::DictionaryValue* dict = nullptr;
   CHECK(value->GetAsDictionary(&dict));
 
   linked_ptr<ResponseCookieModification> modification(
       new ResponseCookieModification);
 
   // Get modification type.
   if (instance_type == keys::kAddResponseCookieType)
     modification->type = helpers::ADD;
   else if (instance_type == keys::kEditResponseCookieType)
     modification->type = helpers::EDIT;
   else if (instance_type == keys::kRemoveResponseCookieType)
     modification->type = helpers::REMOVE;
   else
     INPUT_FORMAT_VALIDATE(false);
 
   // Get filter.
   if (modification->type == helpers::EDIT ||
       modification->type == helpers::REMOVE) {
-    const base::DictionaryValue* filter = NULL;
+    const base::DictionaryValue* filter = nullptr;
     INPUT_FORMAT_VALIDATE(dict->GetDictionary(keys::kFilterKey, &filter));
     modification->filter = ParseFilterResponseCookie(filter);
   }
 
   // Get new value.
   if (modification->type == helpers::ADD) {
-    const base::DictionaryValue* value = NULL;
+    const base::DictionaryValue* value = nullptr;
     INPUT_FORMAT_VALIDATE(dict->GetDictionary(keys::kCookieKey, &value));
     modification->modification = ParseResponseCookie(value);
   } else if (modification->type == helpers::EDIT) {
-    const base::DictionaryValue* value = NULL;
+    const base::DictionaryValue* value = nullptr;
     INPUT_FORMAT_VALIDATE(dict->GetDictionary(keys::kModificationKey, &value));
     modification->modification = ParseResponseCookie(value);
   }
 
   return scoped_refptr<const WebRequestAction>(
       new WebRequestResponseCookieAction(modification));
 }
 
 scoped_refptr<const WebRequestAction> CreateSendMessageToExtensionAction(
     const std::string& name,
     const base::Value* value,
     std::string* error,
     bool* bad_message) {
-  const base::DictionaryValue* dict = NULL;
+  const base::DictionaryValue* dict = nullptr;
   CHECK(value->GetAsDictionary(&dict));
   std::string message;
   INPUT_FORMAT_VALIDATE(dict->GetString(keys::kMessageKey, &message));
   return scoped_refptr<const WebRequestAction>(
       new WebRequestSendMessageToExtensionAction(message));
 }
 
 struct WebRequestActionFactory {
   DedupingFactory<WebRequestAction> factory;
 
@@ skipping 125 matching lines @@
 // static
 scoped_refptr<const WebRequestAction> WebRequestAction::Create(
     content::BrowserContext* browser_context,
     const Extension* extension,
     const base::Value& json_action,
     std::string* error,
     bool* bad_message) {
   *error = "";
   *bad_message = false;
 
-  const base::DictionaryValue* action_dict = NULL;
+  const base::DictionaryValue* action_dict = nullptr;
   INPUT_FORMAT_VALIDATE(json_action.GetAsDictionary(&action_dict));
 
   std::string instance_type;
   INPUT_FORMAT_VALIDATE(
       action_dict->GetString(keys::kInstanceTypeKey, &instance_type));
 
   WebRequestActionFactory& factory = g_web_request_action_factory.Get();
   return factory.factory.Instantiate(
       instance_type, action_dict, error, bad_message);
 }
@@ skipping 78 matching lines @@
 std::string WebRequestRedirectAction::GetName() const {
   return keys::kRedirectRequestType;
 }
 
 LinkedPtrEventResponseDelta WebRequestRedirectAction::CreateDelta(
     const WebRequestData& request_data,
     const std::string& extension_id,
     const base::Time& extension_install_time) const {
   CHECK(request_data.stage & stages());
   if (request_data.request->url() == redirect_url_)
-    return LinkedPtrEventResponseDelta(NULL);
+    return LinkedPtrEventResponseDelta(nullptr);
   LinkedPtrEventResponseDelta result(
       new helpers::EventResponseDelta(extension_id, extension_install_time));
   result->new_url = redirect_url_;
   return result;
 }
 
 //
 // WebRequestRedirectToTransparentImageAction
 //
 
@@ skipping 140 matching lines @@
     const WebRequestData& request_data,
     const std::string& extension_id,
     const base::Time& extension_install_time) const {
   CHECK(request_data.stage & stages());
   CHECK(from_pattern_.get());
 
   const std::string& old_url = request_data.request->url().spec();
   std::string new_url = old_url;
   if (!RE2::Replace(&new_url, *from_pattern_, to_pattern_) ||
       new_url == old_url) {
-    return LinkedPtrEventResponseDelta(NULL);
+    return LinkedPtrEventResponseDelta(nullptr);
   }
 
   LinkedPtrEventResponseDelta result(
       new extension_web_request_api_helpers::EventResponseDelta(
           extension_id, extension_install_time));
   result->new_url = GURL(new_url);
   return result;
 }
 
 //
@@ skipping 108 matching lines @@
 
 LinkedPtrEventResponseDelta
 WebRequestAddResponseHeaderAction::CreateDelta(
     const WebRequestData& request_data,
     const std::string& extension_id,
     const base::Time& extension_install_time) const {
   CHECK(request_data.stage & stages());
   const net::HttpResponseHeaders* headers =
       request_data.original_response_headers;
   if (!headers)
-    return LinkedPtrEventResponseDelta(NULL);
+    return LinkedPtrEventResponseDelta(nullptr);
 
   // Don't generate the header if it exists already.
   if (headers->HasHeaderValue(name_, value_))
-    return LinkedPtrEventResponseDelta(NULL);
+    return LinkedPtrEventResponseDelta(nullptr);
 
   LinkedPtrEventResponseDelta result(
       new helpers::EventResponseDelta(extension_id, extension_install_time));
   result->added_response_headers.push_back(make_pair(name_, value_));
   return result;
 }
 
 //
 // WebRequestRemoveResponseHeaderAction
 //
@@ skipping 28 matching lines @@
 
 LinkedPtrEventResponseDelta
 WebRequestRemoveResponseHeaderAction::CreateDelta(
     const WebRequestData& request_data,
     const std::string& extension_id,
     const base::Time& extension_install_time) const {
   CHECK(request_data.stage & stages());
   const net::HttpResponseHeaders* headers =
       request_data.original_response_headers;
   if (!headers)
-    return LinkedPtrEventResponseDelta(NULL);
+    return LinkedPtrEventResponseDelta(nullptr);
 
   LinkedPtrEventResponseDelta result(
       new helpers::EventResponseDelta(extension_id, extension_install_time));
-  void* iter = NULL;
+  void* iter = nullptr;
   std::string current_value;
   while (headers->EnumerateHeader(&iter, name_, &current_value)) {
     if (has_value_ &&
            (current_value.size() != value_.size() ||
             !std::equal(current_value.begin(), current_value.end(),
                         value_.begin(),
                         base::CaseInsensitiveCompare<char>()))) {
       continue;
     }
     result->deleted_response_headers.push_back(make_pair(name_, current_value));
@@ skipping 28 matching lines @@
 
 std::string WebRequestIgnoreRulesAction::GetName() const {
   return keys::kIgnoreRulesType;
 }
 
 LinkedPtrEventResponseDelta WebRequestIgnoreRulesAction::CreateDelta(
     const WebRequestData& request_data,
     const std::string& extension_id,
     const base::Time& extension_install_time) const {
   CHECK(request_data.stage & stages());
-  return LinkedPtrEventResponseDelta(NULL);
+  return LinkedPtrEventResponseDelta(nullptr);
 }
 
 //
 // WebRequestRequestCookieAction
 //
 
 WebRequestRequestCookieAction::WebRequestRequestCookieAction(
     linked_ptr<RequestCookieModification> request_cookie_modification)
     : WebRequestAction(ON_BEFORE_SEND_HEADERS,
                        ACTION_MODIFY_REQUEST_COOKIE,
@@ skipping 130 matching lines @@
     const base::Time& extension_install_time) const {
   CHECK(request_data.stage & stages());
   LinkedPtrEventResponseDelta result(
       new extension_web_request_api_helpers::EventResponseDelta(
           extension_id, extension_install_time));
   result->messages_to_extension.insert(message_);
   return result;
 }
 
 }  // namespace extensions