Auto merge of #13646 - asajeffrey:script-lookup-iframes-by-frameid, r=ConnorGBrewster

Script lookup iframes by frameid

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Lookup iframes by `FrameId` rather than `PipelineId`. This should make lookup much more reliable, since the frame id doesn't change.

cc @ConnorGBrewster @aneeshusa
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- [X] `./mach build -d` does not report any errors
- [X] `./mach test-tidy` does not report any errors
- [X] These changes do not require tests because refactoring

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components/net/http_loader.rs

@@ -784,7 +784,7 @@ pub fn obtain_response<A>(request_factory: &HttpRequestFactory<R=A>,
         }
 
         if log_enabled!(log::LogLevel::Info) {
-            info!("{}", method);
+            info!("{} {}", method, connection_url);
             for header in headers.iter() {
                 info!(" - {}", header);
             }