Replace FilePath with base::FilePath in some more top level directories.

ui/base/resource/resource_bundle_ios.mm

Index: ui/base/resource/resource_bundle_ios.mm
diff --git a/ui/base/resource/resource_bundle_ios.mm b/ui/base/resource/resource_bundle_ios.mm
index 7140d69ab20e1ffdbed5a4441a6491e04b38f961..07171613cd53dc04893e91c908b416249ca25056 100644
--- a/ui/base/resource/resource_bundle_ios.mm
+++ b/ui/base/resource/resource_bundle_ios.mm
@@ -36,9 +36,9 @@ FilePath GetResourcesPakFilePath(NSString* name, NSString* mac_locale) {
   }
   if (!resource_path) {
     // Return just the name of the pak file.
-    return FilePath(base::SysNSStringToUTF8(name) + ".pak");
+    return base::FilePath(base::SysNSStringToUTF8(name) + ".pak");
   }
-  return FilePath([resource_path fileSystemRepresentation]);
+  return base::FilePath([resource_path fileSystemRepresentation]);
 }
 
 }  // namespace
@@ -70,7 +70,8 @@ FilePath ResourceBundle::GetLocaleFilePath(const std::string& app_locale,
   if ([mac_locale isEqual:@"en_US"])
     mac_locale = @"en";
 
-  FilePath locale_file_path = GetResourcesPakFilePath(@"locale", mac_locale);
+  base::FilePath locale_file_path =
+      GetResourcesPakFilePath(@"locale", mac_locale);
 
   if (delegate_) {
     locale_file_path =
@@ -79,10 +80,10 @@ FilePath ResourceBundle::GetLocaleFilePath(const std::string& app_locale,
 
   // Don't try to load empty values or values that are not absolute paths.
   if (locale_file_path.empty() || !locale_file_path.IsAbsolute())
-    return FilePath();
+    return base::FilePath();
 
   if (test_file_exists && !file_util::PathExists(locale_file_path))
-    return FilePath();
+    return base::FilePath();
 
   return locale_file_path;
 }