Fix up PathProvider on the Mac for FILE_MODULE.

base/base_paths_mac.mm

Index: base/base_paths_mac.mm
diff --git a/base/base_paths_mac.mm b/base/base_paths_mac.mm
index ec1398bf2c501701984a9a3d650ba3db7067a031..3bfb7193b4e526c18620638a6000556e2a78d455 100644
--- a/base/base_paths_mac.mm
+++ b/base/base_paths_mac.mm
@@ -44,9 +44,10 @@ namespace base {
 bool PathProviderMac(int key, FilePath* result) {
   switch (key) {
     case base::FILE_EXE:
-    case base::FILE_MODULE: {
       return GetNSExecutablePath(result);
-    }
+    case base::FILE_MODULE:
+      return base::mac::GetModulePathForSymbol(result,
+          reinterpret_cast<const void*>(&base::PathProviderMac));
     case base::DIR_CACHE:
       return base::mac::GetUserDirectory(NSCachesDirectory, result);
     case base::DIR_APP_DATA: