## Prevent request attempts
# chrome://discards/ attempts to use d3 to display the graph
# New tab page tries to download background images
# New tab page attempts to download the 'One Google' bar
# New tab page attempts to load promos
# Password manager attempts to get credential affiliation
# Attempts to check for updates even with autoupdate disabled
# Dev tools attempts to download css data
--- a/chrome/browser/new_tab_page/one_google_bar/one_google_bar_loader_impl.cc
+++ b/chrome/browser/new_tab_page/one_google_bar/one_google_bar_loader_impl.cc
@@ -287,6 +287,7 @@ OneGoogleBarLoaderImpl::OneGoogleBarLoad
 OneGoogleBarLoaderImpl::~OneGoogleBarLoaderImpl() = default;
 
 void OneGoogleBarLoaderImpl::Load(OneGoogleCallback callback) {
+  return;
   callbacks_.push_back(std::move(callback));
 
   // Note: If there is an ongoing request, abandon it. It's possible that
--- a/chrome/browser/new_tab_page/promos/promo_service.cc
+++ b/chrome/browser/new_tab_page/promos/promo_service.cc
@@ -171,6 +171,7 @@ PromoService::PromoService(
 PromoService::~PromoService() = default;
 
 void PromoService::Refresh() {
+  if ((true)) return;
   std::string command_id;
   // Replace the promo URL with "command:<id>" if such a command ID is set
   // via the feature params.
--- a/chrome/browser/search/background/ntp_background_service.cc
+++ b/chrome/browser/search/background/ntp_background_service.cc
@@ -97,6 +97,7 @@ void NtpBackgroundService::Shutdown() {
 }
 
 void NtpBackgroundService::FetchCollectionInfo() {
+  return;
   if (collections_loader_ != nullptr)
     return;
   collection_error_info_.ClearError();
--- a/chrome/browser/spellchecker/spellcheck_hunspell_dictionary.cc
+++ b/chrome/browser/spellchecker/spellcheck_hunspell_dictionary.cc
@@ -280,6 +280,7 @@ GURL SpellcheckHunspellDictionary::GetDi
 }
 
 void SpellcheckHunspellDictionary::DownloadDictionary(GURL url) {
+  return;
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   DCHECK(browser_context_);
 
--- a/components/assist_ranker/ranker_url_fetcher.cc
+++ b/components/assist_ranker/ranker_url_fetcher.cc
@@ -31,6 +31,7 @@ bool RankerURLFetcher::Request(
     const GURL& url,
     RankerURLFetcher::Callback callback,
     network::mojom::URLLoaderFactory* url_loader_factory) {
+  return false;
   // This function is not supposed to be called if the previous operation is not
   // finished.
   if (state_ == REQUESTING) {
--- a/components/password_manager/core/browser/affiliation/hash_affiliation_fetcher.cc
+++ b/components/password_manager/core/browser/affiliation/hash_affiliation_fetcher.cc
@@ -52,6 +52,9 @@ HashAffiliationFetcher::HashAffiliationF
 HashAffiliationFetcher::~HashAffiliationFetcher() = default;
 
 void HashAffiliationFetcher::StartRequest(
+    const std::vector<FacetURI>& a, RequestInfo b) {}
+[[maybe_unused]]
+void HashAffiliationFetcher::DeadStartRequest(
     const std::vector<FacetURI>& facet_uris,
     RequestInfo request_info) {
   requested_facet_uris_ = facet_uris;
--- a/components/password_manager/core/browser/affiliation/hash_affiliation_fetcher.h
+++ b/components/password_manager/core/browser/affiliation/hash_affiliation_fetcher.h
@@ -22,6 +22,7 @@ class HashAffiliationFetcher : public Af
 
   void StartRequest(const std::vector<FacetURI>& facet_uris,
                     RequestInfo request_info) override;
+  void DeadStartRequest(const std::vector<FacetURI>& a, RequestInfo b);
 
   // AffiliationFetcherInterface
   const std::vector<FacetURI>& GetRequestedFacetURIs() const override;
--- a/components/update_client/update_checker.cc
+++ b/components/update_client/update_checker.cc
@@ -100,6 +100,7 @@ void UpdateCheckerImpl::CheckForUpdates(
     scoped_refptr<UpdateContext> context,
     const base::flat_map<std::string, std::string>& additional_attributes,
     UpdateCheckCallback update_check_callback) {
+  return;
   DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
 
   update_check_callback_ = std::move(update_check_callback);
--- a/third_party/devtools-frontend/src/front_end/panels/elements/WebCustomData.ts
+++ b/third_party/devtools-frontend/src/front_end/panels/elements/WebCustomData.ts
@@ -19,18 +19,7 @@ export class WebCustomData {
   readonly fetchPromiseForTest: Promise<unknown>;
 
   constructor(remoteBase: string) {
-    if (!remoteBase) {
       this.fetchPromiseForTest = Promise.resolve();
-      return;
-    }
-    this.fetchPromiseForTest = fetch(`${remoteBase}third_party/vscode.web-custom-data/browsers.css-data.json`)
-                                   .then(response => response.json())
-                                   .then((json: CSSBrowserData) => {
-                                     for (const property of json.properties) {
-                                       this.#data.set(property.name, property);
-                                     }
-                                   })
-                                   .catch();
   }
 
   /**