Use download URL instead of tab URL in DLP request

Bug: 1084759
Change-Id: I14f2a85ee6e880313f74f2933887a5ad54c558da
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2235872Reviewed-by: Daniel Rubery <drubery@chromium.org>
Commit-Queue: Dominique Fauteux-Chapleau <domfc@chromium.org>
Cr-Commit-Position: refs/heads/master@{#776492}

chrome/browser/safe_browsing/download_protection/deep_scanning_request.cc

@@ -220,9 +220,8 @@ void DeepScanningRequest::Start() {
       DlpDeepScanningClientRequest dlp_request;
       dlp_request.set_content_source(
           DlpDeepScanningClientRequest::FILE_DOWNLOAD);
-      if (item_->GetTabUrl().is_valid()) {
-        dlp_request.set_url(item_->GetTabUrl().spec());
-      }
+      if (item_->GetURL().is_valid())
+        dlp_request.set_url(item_->GetURL().spec());
       request->set_request_dlp_scan(std::move(dlp_request));
     }
 

chrome/browser/safe_browsing/download_protection/deep_scanning_request_unittest.cc

@@ -393,7 +393,7 @@ TEST_P(DeepScanningRequestTest, GeneratesCorrectRequestFromPolicy) {
                   ->last_request()
                   .dlp_scan_request()
                   .url(),
-              tab_url_string_);
+              download_url_.spec());
   }
 
   {