Hotword Private API: Add support for retrieving localized strings.

chrome/browser/extensions/api/hotword_private/hotword_private_api.h

Index: chrome/browser/extensions/api/hotword_private/hotword_private_api.h
diff --git a/chrome/browser/extensions/api/hotword_private/hotword_private_api.h b/chrome/browser/extensions/api/hotword_private/hotword_private_api.h
index 5fc8eb8228959586a7ddcc1bcbf7a9ba0b1f6081..13ac367f44e39967c3b86d86ceb8052493d0c3bd 100644
--- a/chrome/browser/extensions/api/hotword_private/hotword_private_api.h
+++ b/chrome/browser/extensions/api/hotword_private/hotword_private_api.h
@@ -191,6 +191,19 @@ class HotwordPrivateStopTrainingFunction :
   bool RunSync() override;
 };
 
+class HotwordPrivateGetLocalizedStringsFunction
+    : public ChromeSyncExtensionFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION("hotwordPrivate.getLocalizedStrings",
+                             HOTWORDPRIVATE_GETLOCALIZEDSTRINGS)
+
+ protected:
+  virtual ~HotwordPrivateGetLocalizedStringsFunction() {}
+
+  // ExtensionFunction:
+  virtual bool RunSync() override;
+};
+
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_HOTWORD_PRIVATE_HOTWORD_PRIVATE_API_H_