Fix: Loading cid: resources in WebView.

third_party/WebKit/Source/platform/loader/fetch/ResourceFetcherTest.cpp

 /*
  * Copyright (c) 2013, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 717 matching lines @@
 TEST_F(ResourceFetcherTest, ContentTypeDataURL) {
   ResourceFetcher* fetcher = ResourceFetcher::Create(Context());
   FetchParameters fetch_params{ResourceRequest("data:text/testmimetype,foo")};
   Resource* resource = MockResource::Fetch(fetch_params, fetcher);
   ASSERT_TRUE(resource);
   EXPECT_EQ(ResourceStatus::kCached, resource->GetStatus());
   EXPECT_EQ("text/testmimetype", resource->GetResponse().MimeType());
   EXPECT_EQ("text/testmimetype", resource->GetResponse().HttpContentType());
 }
 
+TEST_F(ResourceFetcherTest, ContentIdURL) {
+  KURL url(kParsedURLString, "cid:0123456789@example.com");
+  ResourceResponse response;
+  response.SetURL(url);
+  response.SetHTTPStatusCode(200);
+  RegisterMockedURLLoadWithCustomResponse(url, response);
+
+  ResourceFetcher* fetcher = ResourceFetcher::Create(Context());
+
+  // Fetching a main resource with the Content-ID scheme must be canceled if
+  // there is no MHTMLArchive.
+  {
+    ResourceRequest resource_request(url);
+    resource_request.SetRequestContext(WebURLRequest::kRequestContextIframe);
+    resource_request.SetFrameType(WebURLRequest::kFrameTypeNested);
+    FetchParameters fetch_params(resource_request);
+    RawResource* resource =
+        RawResource::FetchMainResource(fetch_params, fetcher, SubstituteData());
+    EXPECT_EQ(nullptr, resource);
+  }
+
+  // For all the other resource type, it must not be canceled.
+  // Note: It is important not to cancel them because there are some embedders
+  // of WebView that are using Content-ID URLs for sub-resources, even without
+  // any MHTMLArchive. Please see https://crbug.com/739658.
+  {
+    ResourceRequest resource_request(url);
+    resource_request.SetRequestContext(WebURLRequest::kRequestContextVideo);
+    FetchParameters fetch_params(resource_request);
+    RawResource* resource = RawResource::FetchMedia(fetch_params, fetcher);
+    EXPECT_NE(nullptr, resource);
+  }
+}
+
 }  // namespace blink