Hold cros_component_installers in browser_process.

chrome/browser/browser_process_platform_part_chromeos.h

Index: chrome/browser/browser_process_platform_part_chromeos.h
diff --git a/chrome/browser/browser_process_platform_part_chromeos.h b/chrome/browser/browser_process_platform_part_chromeos.h
index 675e57c95c91677755acb36c1c5612fd9efd2f63..35ea83bd4b8a84c8071782de51f71a5b9c9c5cd0 100644
--- a/chrome/browser/browser_process_platform_part_chromeos.h
+++ b/chrome/browser/browser_process_platform_part_chromeos.h
@@ -11,6 +11,7 @@
 #include "base/macros.h"
 #include "base/threading/non_thread_safe.h"
 #include "chrome/browser/browser_process_platform_part_base.h"
+#include "components/component_updater/default_component_installer.h"
 
 namespace chromeos {
 class ChromeSessionManager;
@@ -29,6 +30,11 @@ class TimeZoneResolverManager;
 }
 }
 
+namespace component_updater {
+class ComponentInstallerTraits;
+class DefaultComponentInstaller;
+}
+
 namespace policy {
 class BrowserPolicyConnector;
 class BrowserPolicyConnectorChromeOS;
@@ -98,6 +104,12 @@ class BrowserProcessPlatformPart : public BrowserProcessPlatformPartBase,
   chromeos::system::SystemClock* GetSystemClock();
   void DestroySystemClock();
 
+  scoped_refptr<component_updater::DefaultComponentInstaller>
+  GetCrosComponentInstaller(
+      const std::string& name,
+      std::unique_ptr<component_updater::ComponentInstallerTraits>
+          installer_traits);
+
  private:
   void CreateProfileHelper();
 
@@ -124,6 +136,10 @@ class BrowserProcessPlatformPart : public BrowserProcessPlatformPartBase,
 
   std::unique_ptr<ScopedKeepAlive> keep_alive_;
 
+  std::map<std::string,
+           scoped_refptr<component_updater::DefaultComponentInstaller>>
+      cros_component_installers_;
+
   DISALLOW_COPY_AND_ASSIGN(BrowserProcessPlatformPart);
 };