Let PowerSaveBlocker manager anchor view in Java side

ui/android/view_android.h

Index: ui/android/view_android.h
diff --git a/ui/android/view_android.h b/ui/android/view_android.h
index a996e6804bbc10fc38449e43b34be7937fab6942..8b1d5fee0f0236f82b1839ed847bcdba2d1e0386 100644
--- a/ui/android/view_android.h
+++ b/ui/android/view_android.h
@@ -86,18 +86,17 @@ class UI_ANDROID_EXPORT ViewAndroid {
   void SetAnchorRect(const base::android::JavaRef<jobject>& anchor,
                      const gfx::RectF& bounds);
 
+  // Returns the Java delegate for this view. This is used to delegate work
+  // up to the embedding view (or the embedder that can deal with the
+  // implementation details).
+  const JavaObjectWeakGlobalRef GetViewAndroidDelegate() const;
+
  protected:
   ViewAndroid* parent_;
 
  private:
   void RemoveChild(ViewAndroid* child);
 
-  // Returns the Java delegate for this view. This is used to delegate work
-  // up to the embedding view (or the embedder that can deal with the
-  // implementation details).
-  const base::android::ScopedJavaLocalRef<jobject>
-      GetViewAndroidDelegate() const;
-
   std::list<ViewAndroid*> children_;
   scoped_refptr<cc::Layer> layer_;
   JavaObjectWeakGlobalRef delegate_;