Add BlimpView to a Chrome tab when Blimp is enabled.

ui/android/window_android.h

Index: ui/android/window_android.h
diff --git a/ui/android/window_android.h b/ui/android/window_android.h
index d65235ccd5e99c85eb9a520f73a215720fc7fa2c..b55ba16cfa2c4cd36cddf0ad33951e98363326fa 100644
--- a/ui/android/window_android.h
+++ b/ui/android/window_android.h
@@ -76,7 +76,8 @@ class UI_ANDROID_EXPORT WindowAndroid : public ViewAndroid {
   // Return whether the specified Android permission can be requested by Chrome.
   bool CanRequestPermission(const std::string& permission);
 
-  static WindowAndroid* createForTesting();
+  static WindowAndroid* CreateForTesting();
+  void DestroyForTesting();
 
  private:
   ~WindowAndroid() override;