media: Use bundled Widevine CDM in encrypted media browser tests

chrome/test/base/test_launcher_utils.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/test/base/test_launcher_utils.h"
 
 #include <memory>
 
 #include "base/command_line.h"
 #include "base/environment.h"
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "base/strings/string_number_conversions.h"
 #include "build/build_config.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "components/os_crypt/os_crypt_switches.h"
 #include "content/public/common/content_switches.h"
 
 #if defined(USE_AURA)
 #include "ui/wm/core/wm_core_switches.h"
 #endif
 
 namespace test_launcher_utils {
 
-void PrepareBrowserCommandLineForTests(base::CommandLine* command_line) {
+void PrepareBrowserCommandLineForTests(base::CommandLine* command_line,
+                                       bool enable_component_update) {
   // Turn off preconnects because they break the brittle python webserver;
   // see http://crbug.com/60035.
   command_line->AppendSwitch(switches::kDisablePreconnect);
 
   // Don't show the first run ui.
   command_line->AppendSwitch(switches::kNoFirstRun);
 
   // No default browser check, it would create an info-bar (if we are not the
   // default browser) that could conflicts with some tests expectations.
   command_line->AppendSwitch(switches::kNoDefaultBrowserCheck);
@@ skipping 25 matching lines @@
   // switch.
   if (!command_line->HasSwitch(switches::kPasswordStore))
     command_line->AppendSwitchASCII(switches::kPasswordStore, "basic");
 #endif
 
 #if defined(OS_MACOSX)
   // Use mock keychain on mac to prevent blocking permissions dialogs.
   command_line->AppendSwitch(os_crypt::switches::kUseMockKeychain);
 #endif
 
-  command_line->AppendSwitch(switches::kDisableComponentUpdate);
+  if (!enable_component_update)
+    command_line->AppendSwitch(switches::kDisableComponentUpdate);
 }
 
 bool OverrideUserDataDir(const base::FilePath& user_data_dir) {
   bool success = true;
 
   // PathService::Override() is the best way to change the user data directory.
   // This matches what is done in ChromeMain().
   success = PathService::Override(chrome::DIR_USER_DATA, user_data_dir);
 
 #if defined(OS_POSIX) && !defined(OS_MACOSX)
   // Make sure the cache directory is inside our clear profile. Otherwise
   // the cache may contain data from earlier tests that could break the
   // current test.
   //
   // Note: we use an environment variable here, because we have to pass the
   // value to the child process. This is the simplest way to do it.
   std::unique_ptr<base::Environment> env(base::Environment::Create());
   success = success && env->SetVar("XDG_CACHE_HOME", user_data_dir.value());
 #endif
 
   return success;
 }
 
 }  // namespace test_launcher_utils