Hold cros_component_installers in browser_process.

chrome/browser/browser_process_platform_part_chromeos.cc

 // Copyright (c) 2013 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/browser_process_platform_part_chromeos.h"
 
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "base/time/default_tick_clock.h"
 #include "base/time/tick_clock.h"
@@ skipping 136 matching lines @@
 chromeos::system::SystemClock* BrowserProcessPlatformPart::GetSystemClock() {
   if (!system_clock_.get())
     system_clock_.reset(new chromeos::system::SystemClock());
   return system_clock_.get();
 }
 
 void BrowserProcessPlatformPart::DestroySystemClock() {
   system_clock_.reset();
 }
 
+void BrowserProcessPlatformPart::AddCompatibleCrOSComponent(
+    const std::string& name) {
+  auto it = std::find(compatible_cros_components_.begin(),
+                      compatible_cros_components_.end(), name);
+  if (it == compatible_cros_components_.end()) {
+    compatible_cros_components_.push_back(name);
+  }
+}
+
+bool BrowserProcessPlatformPart::IsCompatibleCrOSComponent(
+    const std::string& name) {
+  auto it = std::find(compatible_cros_components_.begin(),
+                      compatible_cros_components_.end(), name);
+  if (it == compatible_cros_components_.end()) {
+    return false;
+  } else {
+    return true;
+  }

[waffles, 2017/05/24 21:14:35]

Just "return it != compatible_cros_components_.end();"

[xiaochu, 2017/05/24 21:35:37]

Done.

+}
+
 void BrowserProcessPlatformPart::CreateProfileHelper() {
   DCHECK(!created_profile_helper_ && !profile_helper_);
   created_profile_helper_ = true;
   profile_helper_.reset(new chromeos::ProfileHelper());
 }