Remove deprecated FSRef-manipulation methods.

webrtc/base/proxydetect.cc

Index: webrtc/base/proxydetect.cc
diff --git a/webrtc/base/proxydetect.cc b/webrtc/base/proxydetect.cc
index 111cf4b020df642ed9386c592c7d7beb4799e312..7f298de790abaabe5ee8c6b3578309acc8a72215 100644
--- a/webrtc/base/proxydetect.cc
+++ b/webrtc/base/proxydetect.cc
@@ -21,6 +21,7 @@
 #include <CoreServices/CoreServices.h>
 #include <Security/Security.h>
 #include "macconversion.h"
+#include "webrtc/base/unixfilesystem.h"
 #endif
 
 #ifdef WEBRTC_IOS
@@ -392,20 +393,10 @@ bool GetFirefoxProfilePath(Pathname* path) {
   path->AppendFolder("Mozilla");
   path->AppendFolder("Firefox");
 #elif defined(WEBRTC_MAC) && !defined(WEBRTC_IOS)
-  FSRef fr;
-  if (0 != FSFindFolder(kUserDomain, kApplicationSupportFolderType,
-                        kCreateFolder, &fr)) {
-    LOG(LS_ERROR) << "FSFindFolder failed";
-    return false;
-  }
-  char buffer[NAME_MAX + 1];
-  if (0 != FSRefMakePath(&fr, reinterpret_cast<uint8_t*>(buffer),
-                         arraysize(buffer))) {
-    LOG(LS_ERROR) << "FSRefMakePath failed";
-    return false;
-  }
-  path->SetFolder(std::string(buffer));
-  path->AppendFolder("Firefox");
+  rtc::UnixFilesystem filesystem;
+  filesystem.SetApplicationName("Firefox");
+  bool result = filesystem.GetAppDataFolder(path, true);
+  return result;
 #else
   char* user_home = getenv("HOME");
   if (user_home == NULL) {