NavigationMojoResponse: Remove the old code path [4/4]

Remove resource_request::resource_body_stream_url.

Other CLs:
  1) https://chromium-review.googlesource.com/c/chromium/src/+/1015005
  2) https://chromium-review.googlesource.com/c/chromium/src/+/1021631
  3) https://chromium-review.googlesource.com/c/chromium/src/+/1022790
* 4) https://chromium-review.googlesource.com/c/chromium/src/+/1024038

Bug: 705744
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_mojo
Change-Id: I6dc6a9b3c1d8577dc1b3662773078bed7ec8e360
Reviewed-on: https://chromium-review.googlesource.com/1024038
Commit-Queue: Nasko Oskov <nasko@chromium.org>
Reviewed-by: Nasko Oskov <nasko@chromium.org>
Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Cr-Commit-Position: refs/heads/master@{#553334}

content/public/test/url_loader_interceptor.cc

@@ -64,9 +64,8 @@ class URLLoaderInterceptor::Interceptor
     params.url_request = std::move(url_request);
     params.client = std::move(client);
     params.traffic_annotation = traffic_annotation;
-    // We don't intercept the blob URL for plznavigate requests.
-    if (params.url_request.resource_body_stream_url.is_empty() &&
-        parent_->callback_.Run(&params))
+
+    if (parent_->callback_.Run(&params))
       return;
 
     // mock.failed.request is a special request whereby the query indicates what

content/renderer/loader/web_url_loader_impl_unittest.cc

@@ -100,7 +100,6 @@ class TestResourceDispatcher : public ResourceDispatcher {
       EXPECT_TRUE(is_sync);
     peer_ = std::move(peer);
     url_ = request->url;
-    stream_url_ = request->resource_body_stream_url;
     navigation_response_override_params_ =
         std::move(navigation_response_override_params);
     return 1;

services/network/public/cpp/network_param_ipc_traits.h

@@ -347,7 +347,6 @@ IPC_STRUCT_TRAITS_BEGIN(network::ResourceRequest)
   IPC_STRUCT_TRAITS_MEMBER(allow_download)
   IPC_STRUCT_TRAITS_MEMBER(report_raw_headers)
   IPC_STRUCT_TRAITS_MEMBER(previews_state)
-  IPC_STRUCT_TRAITS_MEMBER(resource_body_stream_url)
   IPC_STRUCT_TRAITS_MEMBER(initiated_in_secure_context)
 IPC_STRUCT_TRAITS_END()
 

services/network/public/cpp/resource_request.h

@@ -214,11 +214,6 @@ struct COMPONENT_EXPORT(NETWORK_CPP_BASE) ResourceRequest {
   // about this.
   int previews_state = 0;
 
-  // PlzNavigate: the stream url associated with a navigation. Used to get
-  // access to the body of the response that has already been fetched by the
-  // browser.
-  GURL resource_body_stream_url;
-
   // Wether or not the initiator of this request is a secure context.
   bool initiated_in_secure_context = false;
 };