[ABANDONED] Move multipart/x-mixed-replace related code to ImageResource

components/page_load_metrics/renderer/metrics_render_frame_observer.cc

Index: components/page_load_metrics/renderer/metrics_render_frame_observer.cc
diff --git a/components/page_load_metrics/renderer/metrics_render_frame_observer.cc b/components/page_load_metrics/renderer/metrics_render_frame_observer.cc
index ed6e8be2457f86d47cff73be0cf64152ab151972..f41d67dc7347a4b4e0d65bfea3ef54ddb342b01c 100644
--- a/components/page_load_metrics/renderer/metrics_render_frame_observer.cc
+++ b/components/page_load_metrics/renderer/metrics_render_frame_observer.cc
@@ -85,10 +85,6 @@ bool MetricsRenderFrameObserver::ShouldSendMetrics() const {
     return false;
 
   const blink::WebURLResponse& url_response = frame->dataSource()->response();
-  // Ignore multipart responses (e.g. MHTML).
-  if (url_response.isMultipartPayload())
-    return false;
-
   // Ignore non-HTML documents (e.g. SVG). Note that images are treated by
   // Blink as HTML documents, so to exclude images, we must perform
   // additional mime type checking below.