Hold cros_component_installers in browser_process.

chrome/browser/browser_process_platform_part_chromeos.cc

Index: chrome/browser/browser_process_platform_part_chromeos.cc
diff --git a/chrome/browser/browser_process_platform_part_chromeos.cc b/chrome/browser/browser_process_platform_part_chromeos.cc
index 4b63b33c1daa1e26f6c42546c58b4710352232d9..c8340b71935b94a4d23e7d5dd152b939c0420ae3 100644
--- a/chrome/browser/browser_process_platform_part_chromeos.cc
+++ b/chrome/browser/browser_process_platform_part_chromeos.cc
@@ -154,6 +154,16 @@ void BrowserProcessPlatformPart::DestroySystemClock() {
   system_clock_.reset();
 }
 
+void BrowserProcessPlatformPart::AddCompatibleCrOSComponent(
+    const std::string& name) {
+  compatible_cros_components_.insert(name);
+}
+
+bool BrowserProcessPlatformPart::IsCompatibleCrOSComponent(
+    const std::string& name) {
+  return compatible_cros_components_.count(name) > 0;
+}
+
 void BrowserProcessPlatformPart::CreateProfileHelper() {
   DCHECK(!created_profile_helper_ && !profile_helper_);
   created_profile_helper_ = true;