Add a kill switch for all of Web Bluetooth.

chrome/browser/chrome_content_browser_client.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/chrome_content_browser_client.h"
 
 #include <map>
 #include <set>
 #include <utility>
 #include <vector>
@@ skipping 35 matching lines @@
 #include "chrome/browser/download/download_prefs.h"
 #include "chrome/browser/engagement/site_engagement_eviction_policy.h"
 #include "chrome/browser/font_family_cache.h"
 #include "chrome/browser/geolocation/chrome_access_token_store.h"
 #include "chrome/browser/media/media_capture_devices_dispatcher.h"
 #include "chrome/browser/metrics/chrome_browser_main_extra_parts_metrics.h"
 #include "chrome/browser/nacl_host/nacl_browser_delegate_impl.h"
 #include "chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.h"
 #include "chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings_factory.h"
 #include "chrome/browser/notifications/platform_notification_service_impl.h"
+#include "chrome/browser/permissions/permission_context_base.h"
 #include "chrome/browser/platform_util.h"
 #include "chrome/browser/prerender/prerender_final_status.h"
 #include "chrome/browser/prerender/prerender_manager.h"
 #include "chrome/browser/prerender/prerender_manager_factory.h"
 #include "chrome/browser/prerender/prerender_message_filter.h"
 #include "chrome/browser/printing/printing_message_filter.h"
 #include "chrome/browser/profiles/chrome_browser_main_extra_parts_profiles.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_io_data.h"
 #include "chrome/browser/renderer_host/chrome_render_message_filter.h"
@@ skipping 1912 matching lines @@
     const GURL& url,
     content::ResourceContext* context) {
   HostContentSettingsMap* content_settings =
       ProfileIOData::FromResourceContext(context)->GetHostContentSettingsMap();
 
   return content_settings->GetContentSetting(
              url, url, CONTENT_SETTINGS_TYPE_KEYGEN, std::string()) ==
          CONTENT_SETTING_ALLOW;
 }
 
-bool ChromeContentBrowserClient::AllowWebBluetooth(
+ChromeContentBrowserClient::AllowWebBluetoothResult
+ChromeContentBrowserClient::AllowWebBluetooth(
     content::BrowserContext* browser_context,
     const url::Origin& requesting_origin,
     const url::Origin& embedding_origin) {
+  // TODO(crbug.com/598890): Don't disable if
+  // base::CommandLine::ForCurrentProcess()->
+  // HasSwitch(switches::kEnableWebBluetooth) is true.
+  if (variations::GetVariationParamValue(
+          PermissionContextBase::kPermissionsKillSwitchFieldStudy,
+          "Bluetooth") ==
+      PermissionContextBase::kPermissionsKillSwitchBlockedValue) {
+    // The kill switch is enabled for this permission. Block requests.
+    return AllowWebBluetoothResult::BLOCK_GLOBALLY_DISABLED;
+  }
+
   const HostContentSettingsMap* const content_settings =
       HostContentSettingsMapFactory::GetForProfile(
           Profile::FromBrowserContext(browser_context));
 
-  return content_settings->GetContentSetting(
-             GURL(requesting_origin.Serialize()),
-             GURL(embedding_origin.Serialize()),
-             CONTENT_SETTINGS_TYPE_BLUETOOTH_GUARD,
-             std::string()) != CONTENT_SETTING_BLOCK;
+  if (content_settings->GetContentSetting(GURL(requesting_origin.Serialize()),
+                                          GURL(embedding_origin.Serialize()),
+                                          CONTENT_SETTINGS_TYPE_BLUETOOTH_GUARD,
+                                          std::string()) ==
+      CONTENT_SETTING_BLOCK) {
+    return AllowWebBluetoothResult::BLOCK_POLICY;
+  }
+  return AllowWebBluetoothResult::ALLOW;
 }
 
 net::URLRequestContext*
 ChromeContentBrowserClient::OverrideRequestContextForURL(
     const GURL& url, content::ResourceContext* context) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 #if defined(ENABLE_EXTENSIONS)
   if (url.SchemeIs(extensions::kExtensionScheme)) {
     ProfileIOData* io_data = ProfileIOData::FromResourceContext(context);
     return io_data->extensions_request_context();
@@ skipping 944 matching lines @@
   if (channel <= kMaxDisableEncryptionChannel) {
     static const char* const kWebRtcDevSwitchNames[] = {
       switches::kDisableWebRtcEncryption,
     };
     to_command_line->CopySwitchesFrom(from_command_line,
                                       kWebRtcDevSwitchNames,
                                       arraysize(kWebRtcDevSwitchNames));
   }
 }
 #endif  // defined(ENABLE_WEBRTC)