Move content offset to ViewAndroid

ui/android/view_android.cc

Index: ui/android/view_android.cc
diff --git a/ui/android/view_android.cc b/ui/android/view_android.cc
index 96e56495886dd26d8807a5847a0d6f0e12894295..52859edaba8294fd7b6f6e5f5d792f8fc839fb06 100644
--- a/ui/android/view_android.cc
+++ b/ui/android/view_android.cc
@@ -140,10 +140,7 @@ void ViewAndroid::SetAnchorRect(const JavaRef<jobject>& anchor,
       ->GetDisplayNearestWindow(this)
       .device_scale_factor();
   int left_margin = std::round(bounds.x() * scale);
-  // TODO(jinsukkim): Move content_offset() to ViewAndroid, since it's
-  //                  specific to a given web contents/render widget.
-  int top_margin = std::round(
-      (GetWindowAndroid()->content_offset().y() + bounds.y()) * scale);
+  int top_margin = std::round((content_offset().y() + bounds.y()) * scale);
   JNIEnv* env = base::android::AttachCurrentThread();
   Java_ViewAndroidDelegate_setViewPosition(
       env, delegate, anchor, bounds.x(), bounds.y(), bounds.width(),