Replace NULL with nullptr in all C++ files.

webrtc/base/proxydetect.cc

Index: webrtc/base/proxydetect.cc
diff --git a/webrtc/base/proxydetect.cc b/webrtc/base/proxydetect.cc
index b0fa30488a1eed3f770bf78afe6fe242b50447a5..bc3c73e1ac06fb324e64ecd17b585496c469935a 100644
--- a/webrtc/base/proxydetect.cc
+++ b/webrtc/base/proxydetect.cc
@@ -155,8 +155,8 @@ extern "C" {
 #define WINHTTP_ACCESS_TYPE_DEFAULT_PROXY               0
 #define WINHTTP_ACCESS_TYPE_NO_PROXY                    1
 #define WINHTTP_ACCESS_TYPE_NAMED_PROXY                 3
-#define WINHTTP_NO_PROXY_NAME     NULL
-#define WINHTTP_NO_PROXY_BYPASS   NULL
+#define WINHTTP_NO_PROXY_NAME nullptr
+#define WINHTTP_NO_PROXY_BYPASS nullptr
 
 #endif // _TRY_WINHTTP
 
@@ -401,7 +401,7 @@ bool GetFirefoxProfilePath(Pathname* path) {
   return result;
 #else
   char* user_home = getenv("HOME");
-  if (user_home == NULL) {
+  if (user_home == nullptr) {
     return false;
   }
   path->SetFolder(std::string(user_home));
@@ -412,7 +412,7 @@ bool GetFirefoxProfilePath(Pathname* path) {
 }
 
 bool GetDefaultFirefoxProfile(Pathname* profile_path) {
-  RTC_DCHECK(NULL != profile_path);
+  RTC_DCHECK(nullptr != profile_path);
   Pathname path;
   if (!GetFirefoxProfilePath(&path)) {
     return false;
@@ -623,7 +623,7 @@ bool IsDefaultBrowserFirefox() {
 
   DWORD size, type;
   bool success = false;
-  result = RegQueryValueEx(key, L"", 0, &type, NULL, &size);
+  result = RegQueryValueEx(key, L"", 0, &type, nullptr, &size);
   if (result == ERROR_SUCCESS && type == REG_SZ) {
     wchar_t* value = new wchar_t[size+1];
     BYTE* buffer = reinterpret_cast<BYTE*>(value);
@@ -636,7 +636,7 @@ bool IsDefaultBrowserFirefox() {
       for (size_t i = 0; i < size; ++i) {
         value[i] = tolowercase(value[i]);
       }
-      success = (NULL != strstr(value, L"firefox.exe"));
+      success = (nullptr != strstr(value, L"firefox.exe"));
     }
     delete[] value;
   }
@@ -647,7 +647,7 @@ bool IsDefaultBrowserFirefox() {
 
 bool GetWinHttpProxySettings(const char* url, ProxyInfo* proxy) {
   HMODULE winhttp_handle = LoadLibrary(L"winhttp.dll");
-  if (winhttp_handle == NULL) {
+  if (winhttp_handle == nullptr) {
     LOG(LS_ERROR) << "Failed to load winhttp.dll.";
     return false;
   }
@@ -699,7 +699,7 @@ bool WinHttpAutoDetectProxyForUrl(const char* agent, const char* url,
   Url<char> purl(url);
   bool success = true;
   HMODULE winhttp_handle = LoadLibrary(L"winhttp.dll");
-  if (winhttp_handle == NULL) {
+  if (winhttp_handle == nullptr) {
     LOG(LS_ERROR) << "Failed to load winhttp.dll.";
     return false;
   }
@@ -961,7 +961,7 @@ bool p_getProxyInfoForTypeFromDictWithKeys(ProxyInfo* proxy,
   std::string hostname;
   int port;
 
-  if ((proxyDict != NULL) &&
+  if ((proxyDict != nullptr) &&
       (CFGetTypeID(proxyDict) == CFDictionaryGetTypeID())) {
     // CoreFoundation stuff that we'll have to get from
     // the dictionaries and interpret or convert into more usable formats.
@@ -1077,9 +1077,8 @@ bool p_putPasswordInProxyInfo(ProxyInfo* proxy) {
   if (result) {
     LOG(LS_INFO) << "trying to get proxy username/password";
     SecKeychainSearchRef sref;
-    oss = SecKeychainSearchCreateFromAttributes(NULL,
-                                                kSecInternetPasswordItemClass,
-                                                &attrList, &sref);
+    oss = SecKeychainSearchCreateFromAttributes(
+        nullptr, kSecInternetPasswordItemClass, &attrList, &sref);
     if (0 == oss) {
       LOG(LS_INFO) << "SecKeychainSearchCreateFromAttributes was good";
       // Get the first item, if there is one.
@@ -1099,12 +1098,8 @@ bool p_putPasswordInProxyInfo(ProxyInfo* proxy) {
 
         attribsToGet.tag = &tag;
         attribsToGet.format = &format;
-        OSStatus copyres = SecKeychainItemCopyAttributesAndData(iref,
-                                                                &attribsToGet,
-                                                                NULL,
-                                                                &localList,
-                                                                &length,
-                                                                &data);
+        OSStatus copyres = SecKeychainItemCopyAttributesAndData(
+            iref, &attribsToGet, nullptr, &localList, &length, &data);
         if (0 == copyres) {
           LOG(LS_INFO) << "...and we can pull it out.";
           // now, we know from experimentation (sadly not from docs)
@@ -1155,10 +1150,10 @@ bool p_putPasswordInProxyInfo(ProxyInfo* proxy) {
 bool GetMacProxySettings(ProxyInfo* proxy) {
   // based on the Apple Technical Q&A QA1234
   // http://developer.apple.com/qa/qa2001/qa1234.html
-  CFDictionaryRef proxyDict = SCDynamicStoreCopyProxies(NULL);
+  CFDictionaryRef proxyDict = SCDynamicStoreCopyProxies(nullptr);
   bool result = false;
 
-  if (proxyDict != NULL) {
+  if (proxyDict != nullptr) {
     // sending it off to another function makes it easier to unit test
     // since we can make our own dictionary to hand to that function.
     result = GetMacProxySettingsFromDictionary(proxy, proxyDict);