Revert of Eliminate silently letting errors pass on pak loading.

ui/base/resource/resource_bundle_mac.mm

Index: ui/base/resource/resource_bundle_mac.mm
diff --git a/ui/base/resource/resource_bundle_mac.mm b/ui/base/resource/resource_bundle_mac.mm
index 0a97f716e907080e6f5b57bef28de20467a0c6bc..13b277854f3e12584c259cd34e609f0693f00e8b 100644
--- a/ui/base/resource/resource_bundle_mac.mm
+++ b/ui/base/resource/resource_bundle_mac.mm
@@ -39,14 +39,8 @@
   }
 
   if (!resource_path) {
-    // Trying to load a resources file that doesn't exist is an error. Return
-    // just the name of the pack file so that further down the line it is easier
-    // to track down what happened.
-    std::string name_string = base::SysNSStringToUTF8(name);
-    std::string locale_string = base::SysNSStringToUTF8(mac_locale);
-    LOG(ERROR) << "Tried to get the file path of a non-existent pak file '"
-               << name_string << "' for locale '" << locale_string << "'";
-    return base::FilePath(name_string + ".pak");
+    // Return just the name of the pack file.
+    return base::FilePath(base::SysNSStringToUTF8(name) + ".pak");
   }
 
   return base::FilePath([resource_path fileSystemRepresentation]);