Fix RawResource::MatchPreload and modify test

This CL fixes RawResource::MatchPreload. RawResource::MatchPreload
should invoke the base class's MatchPreload. It did this, but then
https://crrev.com/c/2154817 accidentally removed this invocation during
a clean-up. This CL adds the invocation back, and modifies a RawResource
preload test to depend on this fix.

R=yhirano@chromium.org,yoavweiss@chromium.org

Bug: N/A
Change-Id: Ie4166670a1251e5d0a19dfcfbe3611c6a8c5e1d4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2157305Reviewed-by: Yoav Weiss <yoavweiss@chromium.org>
Commit-Queue: Dominic Farolino <dom@chromium.org>
Cr-Commit-Position: refs/heads/master@{#760597}

third_party/blink/renderer/platform/loader/fetch/raw_resource.cc

@@ -351,6 +351,7 @@ void RawResource::DidDownloadToBlob(scoped_refptr<BlobDataHandle> blob) {
 }
 
 void RawResource::MatchPreload(const FetchParameters& params) {
+  Resource::MatchPreload(params);
   matched_with_non_streaming_destination_ =
       !params.GetResourceRequest().UseStreamOnResponse();
 }

third_party/blink/renderer/platform/loader/fetch/raw_resource_test.cc

@@ -256,6 +256,7 @@ TEST_F(RawResourceTest, PreloadWithAsynchronousAddClient) {
   FetchParameters params(std::move(request));
   params.MutableResourceRequest().SetUseStreamOnResponse(false);
   raw->MatchPreload(params);
+  EXPECT_FALSE(raw->IsUnusedPreload());
   raw->AddClient(dummy_client, platform_->test_task_runner().get());
 
   raw->ResponseBodyReceived(*body_loader, platform_->test_task_runner());