Removed partial Client Hints implementation from the Chrome side.

chrome/browser/net/chrome_network_delegate.cc

 // Copyright (c) 2012 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 "chrome/browser/net/chrome_network_delegate.h"
 
 #include <stdlib.h>
 
 #include <vector>
 
@@ skipping 11 matching lines @@
 #include "base/profiler/scoped_tracker.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/time/time.h"
 #include "base/trace_event/trace_event.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/content_settings/cookie_settings.h"
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
 #include "chrome/browser/custom_handlers/protocol_handler_registry.h"
 #include "chrome/browser/net/chrome_extensions_network_delegate.h"
-#include "chrome/browser/net/client_hints.h"
 #include "chrome/browser/net/connect_interceptor.h"
 #include "chrome/browser/net/safe_search_util.h"
 #include "chrome/browser/prerender/prerender_tracker.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/task_manager/task_manager.h"
 #include "chrome/common/pref_names.h"
 #include "components/domain_reliability/monitor.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/render_view_host.h"
@@ skipping 275 matching lines @@
     CookieSettings* cookie_settings) {
   cookie_settings_ = cookie_settings;
 }
 
 void ChromeNetworkDelegate::set_predictor(
     chrome_browser_net::Predictor* predictor) {
   connect_interceptor_.reset(
       new chrome_browser_net::ConnectInterceptor(predictor));
 }
 
-void ChromeNetworkDelegate::SetEnableClientHints() {
-  client_hints_.reset(new ClientHints());
-  client_hints_->Init();
-}
-
 // static
 #if defined(ENABLE_EXTENSIONS)
 void ChromeNetworkDelegate::NeverThrottleRequests() {
   g_never_throttle_requests_ = true;
 }
 #endif
 
 // static
 void ChromeNetworkDelegate::InitializePrefsOnUIThread(
     BooleanPrefMember* enable_referrers,
@@ skipping 54 matching lines @@
   }
 #endif
 
   extensions_delegate_->ForwardStartRequestStatus(request);
 
   if (!enable_referrers_->GetValue())
     request->SetReferrer(std::string());
   if (enable_do_not_track_ && enable_do_not_track_->GetValue())
     request->SetExtraRequestHeaderByName(kDNTHeader, "1", true /* override */);
 
-  if (client_hints_) {
-    request->SetExtraRequestHeaderByName(
-        ClientHints::kDevicePixelRatioHeader,
-        client_hints_->GetDevicePixelRatioHeader(), true);
-  }
-
   bool force_safe_search =
       (force_safe_search_ && force_safe_search_->GetValue()) ||
       (force_google_safe_search_ && force_google_safe_search_->GetValue());
 
   net::CompletionCallback wrapped_callback = callback;
   if (force_safe_search) {
     wrapped_callback = base::Bind(&ForceGoogleSafeSearchCallbackWrapper,
                                   callback,
                                   base::Unretained(request),
                                   base::Unretained(new_url));
@@ skipping 319 matching lines @@
   return privacy_mode;
 }
 
 bool ChromeNetworkDelegate::OnCancelURLRequestWithPolicyViolatingReferrerHeader(
     const net::URLRequest& request,
     const GURL& target_url,
     const GURL& referrer_url) const {
   ReportInvalidReferrerSend(target_url, referrer_url);
   return true;
 }