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..2190774ee482108b0d604b70f3fc9c74c7ab8439 100644
--- a/chrome/browser/browser_process_platform_part_chromeos.cc
+++ b/chrome/browser/browser_process_platform_part_chromeos.cc
@@ -154,6 +154,20 @@ void BrowserProcessPlatformPart::DestroySystemClock() {
   system_clock_.reset();
 }
 
+scoped_refptr<component_updater::CrOSComponentInstaller>
+BrowserProcessPlatformPart::GetCrosComponentInstaller(
+    const std::string& name,
+    std::unique_ptr<component_updater::ComponentInstallerTraits>
+        installer_traits) {
+  auto it = cros_component_installers_.find(name);
+  if (it == cros_component_installers_.end()) {
+    cros_component_installers_[name] =
+        new component_updater::CrOSComponentInstaller(
+            std::move(installer_traits));
+  }
+  return cros_component_installers_[name];
+}
+
 void BrowserProcessPlatformPart::CreateProfileHelper() {
   DCHECK(!created_profile_helper_ && !profile_helper_);
   created_profile_helper_ = true;