Network traffic annotation added to chrome::BitmapFetcher.

chrome/browser/ui/passwords/account_avatar_fetcher.cc

 // Copyright 2015 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/ui/passwords/account_avatar_fetcher.h"
 
 #include "net/base/load_flags.h"
+#include "net/traffic_annotation/network_traffic_annotation.h"
 #include "ui/gfx/image/image.h"
 #include "ui/gfx/image/image_skia.h"
 #include "ui/gfx/image/image_skia_operations.h"
 
+namespace {
+
+constexpr net::NetworkTrafficAnnotationTag kTrafficAnnotation =
+    net::DefineNetworkTrafficAnnotation("credenential_avatar", R"(
+        semantics {
+          sender: "Chrome Password Manager"
+          description:
+            "Every credential saved in Chrome via the Credential Management "
+            "API can have an avatar URL. The URL is essentially provided by "
+            "the site calling the API. The avatar is used in the account "
+            "chooser UI and auto signin toast which appear when a site calls "
+            "navigator.credentials.get(). The avatar is retrieved before "
+            "showing the UI."
+          trigger:
+            "User visits a site that calls navigator.credentials.get(). "
+            "Assuming there are matching credentials in the Chrome password "
+            "store, the avatars are retrieved."
+          destination: WEBSITE
+        }
+        policy {
+          cookies_allowed: false
+          setting:
+            "One can disable saving new credentials in the settings (see "
+            "'Passwords and forms'). There is no setting to disable the API."
+          }
+        })");
+
+}  // namespace
+
+
 AccountAvatarFetcher::AccountAvatarFetcher(
     const GURL& url,
     const base::WeakPtr<AccountAvatarFetcherDelegate>& delegate)
-    : fetcher_(url, this), delegate_(delegate) {
-}
+    : fetcher_(url, this, kTrafficAnnotation), delegate_(delegate) {}
 
 AccountAvatarFetcher::~AccountAvatarFetcher() = default;
 
 void AccountAvatarFetcher::Start(
     net::URLRequestContextGetter* request_context) {
   fetcher_.Init(request_context, std::string(),
                 net::URLRequest::NEVER_CLEAR_REFERRER,
                 net::LOAD_DO_NOT_SEND_COOKIES | net::LOAD_DO_NOT_SAVE_COOKIES |
                 net::LOAD_DO_NOT_SEND_AUTH_DATA | net::LOAD_MAYBE_USER_GESTURE);
   fetcher_.Start();
 }
 
 void AccountAvatarFetcher::OnFetchComplete(const GURL& /*url*/,
                                            const SkBitmap* bitmap) {
   if (bitmap && delegate_)
     delegate_->UpdateAvatar(gfx::ImageSkia::CreateFrom1xBitmap(*bitmap));
 
   delete this;
-}
+}