Introduces snackbar enum, & other snackbar classes on android for translate

chrome/browser/ui/android/infobars/translate_compact_infobar.h

Index: chrome/browser/ui/android/infobars/translate_compact_infobar.h
diff --git a/chrome/browser/ui/android/infobars/translate_compact_infobar.h b/chrome/browser/ui/android/infobars/translate_compact_infobar.h
index 90ebd30e6cdab9dd2cd0970c0614ea39a42af5ab..79fd740fca3c02597d916caa03f09aeb7ea3815d 100644
--- a/chrome/browser/ui/android/infobars/translate_compact_infobar.h
+++ b/chrome/browser/ui/android/infobars/translate_compact_infobar.h
@@ -41,6 +41,10 @@ class TranslateCompactInfoBar
                         const std::string& translated_lang,
                         translate::TranslateErrors::Type error_type) override;
 
+  // JNI method to show snackbar on Android.
+  void ShowSnackbar(JNIEnv* env,
+                    const base::android::JavaParamRef<jobject>& obj);
+
  private:
   // InfoBarAndroid:
   base::android::ScopedJavaLocalRef<jobject> CreateRenderInfoBar(
@@ -52,6 +56,8 @@ class TranslateCompactInfoBar
   translate::TranslateInfoBarDelegate* GetDelegate();
   translate::ContentTranslateDriver* translate_driver_;
 
+  int snackbar_type_;
+
   DISALLOW_COPY_AND_ASSIGN(TranslateCompactInfoBar);
 };