Revert "Add HashAffiliationFetcher skeleton to retrieve affiliations by hash prefix."

This reverts commit 6a5d7abc.

Reason for revert: HashAffiliationFetcherTest.BuildQueryURL fails consistently on linux-chromeos-chrome

BUG=1134278

Original change's description:
> Add HashAffiliationFetcher skeleton to retrieve affiliations by hash prefix.
>
> This change creates HashAffiliationFetcher skeleton that extends AffiliationFetcherBase.
> This fetcher will provide additional privacy layer as it will request affiliations for a larger group of facets by passing only the prefixes of hashed URLs.
>
> Bug: 1108279
> Change-Id: I4a2b09aa7d8c3c51f4b30ba966a17ba5afb9b09b
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2423883
> Commit-Queue: Nela Kaczmarek <nelakaczmarek@google.com>
> Reviewed-by: Jan Wilken Dörrie <jdoerrie@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#812653}

TBR=vasilii@chromium.org,jdoerrie@chromium.org,nelakaczmarek@google.com

Change-Id: I8636d3cdd74f75de4ce4be9d2f76f18d3ada2f83
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 1108279
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2441379Reviewed-by: Ahmed Fakhry <afakhry@chromium.org>
Commit-Queue: Ahmed Fakhry <afakhry@chromium.org>
Cr-Commit-Position: refs/heads/master@{#812850}

components/password_manager/core/browser/BUILD.gn

@@ -211,8 +211,6 @@ static_library("browser") {
     "site_affiliation/affiliation_service_impl.h",
     "site_affiliation/asset_link_data.cc",
     "site_affiliation/asset_link_data.h",
-    "site_affiliation/hash_affiliation_fetcher.cc",
-    "site_affiliation/hash_affiliation_fetcher.h",
     "sql_table_builder.cc",
     "sql_table_builder.h",
     "statistics_table.cc",
@@ -650,7 +648,6 @@ source_set("unit_tests") {
     "psl_matching_helper_unittest.cc",
     "site_affiliation/affiliation_service_impl_unittest.cc",
     "site_affiliation/asset_link_data_unittest.cc",
-    "site_affiliation/hash_affiliation_fetcher_unittest.cc",
     "sql_table_builder_unittest.cc",
     "statistics_table_unittest.cc",
     "store_metrics_reporter_unittest.cc",

components/password_manager/core/browser/site_affiliation/hash_affiliation_fetcher.cc

-// Copyright 2020 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "components/password_manager/core/browser/site_affiliation/hash_affiliation_fetcher.h"
-
-#include <memory>
-
-#include "components/password_manager/core/browser/android_affiliation/affiliation_utils.h"
-#include "google_apis/google_api_keys.h"
-#include "net/base/url_util.h"
-#include "services/network/public/cpp/shared_url_loader_factory.h"
-#include "url/gurl.h"
-
-namespace password_manager {
-
-HashAffiliationFetcher::HashAffiliationFetcher(
-    scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory,
-    AffiliationFetcherDelegate* delegate)
-    : AffiliationFetcherBase(std::move(url_loader_factory), delegate) {}
-
-HashAffiliationFetcher::~HashAffiliationFetcher() = default;
-
-// TODO: Add an implementation.
-void HashAffiliationFetcher::StartRequest(
-    const std::vector<FacetURI>& facet_uris,
-    RequestInfo request_info) {}
-
-const std::vector<FacetURI>& HashAffiliationFetcher::GetRequestedFacetURIs()
-    const {
-  return requested_facet_uris_;
-}
-// static
-GURL HashAffiliationFetcher::BuildQueryURL() {
-  return net::AppendQueryParameter(
-      GURL("https://www.googleapis.com/affiliation/v1/"
-           "affiliation:lookupByHashPrefix"),
-      "key", google_apis::GetAPIKey());
-}
-
-}  // namespace password_manager

components/password_manager/core/browser/site_affiliation/hash_affiliation_fetcher.h

-// Copyright 2020 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_SITE_AFFILIATION_HASH_AFFILIATION_FETCHER_H_
-#define COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_SITE_AFFILIATION_HASH_AFFILIATION_FETCHER_H_
-
-#include "components/password_manager/core/browser/site_affiliation/affiliation_fetcher_base.h"
-
-namespace password_manager {
-
-// Fetches authoritative information about facets' affiliations with additional
-// privacy layer. It uses SHA-256 to hash facet URLs and sends only a specified
-// amount of hash prefixes to eventually retrieve a larger group of affiliations
-// including those actually required.
-class HashAffiliationFetcher : public AffiliationFetcherBase {
- public:
-  HashAffiliationFetcher(
-      scoped_refptr<network::SharedURLLoaderFactory> url_loader_factory,
-      AffiliationFetcherDelegate* delegate);
-  ~HashAffiliationFetcher() override;
-
-  void StartRequest(const std::vector<FacetURI>& facet_uris,
-                    RequestInfo request_info) override;
-
-  // AffiliationFetcherInterface
-  const std::vector<FacetURI>& GetRequestedFacetURIs() const override;
-
-  // Builds the URL for the Affiliation API's lookup method.
-  static GURL BuildQueryURL();
-
- private:
-  std::vector<FacetURI> requested_facet_uris_;
-};
-
-}  // namespace password_manager
-
-#endif  // COMPONENTS_PASSWORD_MANAGER_CORE_BROWSER_SITE_AFFILIATION_HASH_AFFILIATION_FETCHER_H_

components/password_manager/core/browser/site_affiliation/hash_affiliation_fetcher_unittest.cc

-// Copyright 2020 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "components/password_manager/core/browser/site_affiliation/hash_affiliation_fetcher.h"
-
-#include "components/password_manager/core/browser/android_affiliation/mock_affiliation_fetcher_delegate.h"
-#include "services/network/public/cpp/weak_wrapper_shared_url_loader_factory.h"
-#include "services/network/test/test_url_loader_factory.h"
-#include "testing/gtest/include/gtest/gtest.h"
-#include "url/gurl.h"
-
-namespace password_manager {
-
-class HashAffiliationFetcherTest : public testing::Test {
- public:
-  HashAffiliationFetcherTest() = default;
-  ~HashAffiliationFetcherTest() override = default;
-};
-
-TEST_F(HashAffiliationFetcherTest, BuildQueryURL) {
-  network::TestURLLoaderFactory test_url_loader_factory;
-  scoped_refptr<network::SharedURLLoaderFactory> test_shared_loader_factory =
-      base::MakeRefCounted<network::WeakWrapperSharedURLLoaderFactory>(
-          &test_url_loader_factory);
-  MockAffiliationFetcherDelegate mock_delegate;
-
-  HashAffiliationFetcher fetcher(test_shared_loader_factory, &mock_delegate);
-
-  EXPECT_EQ(GURL("https://www.googleapis.com/affiliation/v1/"
-                 "affiliation:lookupByHashPrefix?key=dummytoken"),
-            fetcher.BuildQueryURL());
-}
-
-}  // namespace password_manager