Store physical backing size in ViewAndroid

content/browser/web_contents/web_contents_view_android.cc

Index: content/browser/web_contents/web_contents_view_android.cc
diff --git a/content/browser/web_contents/web_contents_view_android.cc b/content/browser/web_contents/web_contents_view_android.cc
index 019975a1161bee7f39462b6cc43e1b8c7a6e4667..aec8e331dd4d012a955fcbceaff2d41407da6256 100644
--- a/content/browser/web_contents/web_contents_view_android.cc
+++ b/content/browser/web_contents/web_contents_view_android.cc
@@ -401,4 +401,13 @@ bool WebContentsViewAndroid::OnTouchEvent(const ui::MotionEventAndroid& event,
   return false;  // let the children handle the actual event.
 }
 
+bool WebContentsViewAndroid::OnPhysicalBackingSizeChanged() {
+  if (web_contents_->GetRenderWidgetHostView()) {
+    // |SendScreenRects()| indirectly calls GetViewSize() that asks Java layer.
+    web_contents_->SendScreenRects();
+    return false;
+  }
+  return true;
+}
+
 } // namespace content