Check the IME component extension's availability on linux_chromeos, so that system fallback VK can …

chromeos/ime/component_extension_ime_manager.h

Index: chromeos/ime/component_extension_ime_manager.h
diff --git a/chromeos/ime/component_extension_ime_manager.h b/chromeos/ime/component_extension_ime_manager.h
index a505332b330929b95fba2863ec1e7931b54006b4..98e0bbc26a62779d5a0f0ff19c963bec95fa7134 100644
--- a/chromeos/ime/component_extension_ime_manager.h
+++ b/chromeos/ime/component_extension_ime_manager.h
@@ -54,7 +54,7 @@ class CHROMEOS_EXPORT ComponentExtensionIMEManagerDelegate {
 
   // Loads component extension IME associated with |extension_id|.
   // Returns false if it fails, otherwise returns true.
-  virtual bool Load(Profile* profile,
+  virtual void Load(Profile* profile,
                     const std::string& extension_id,
                     const std::string& manifest,
                     const base::FilePath& path) = 0;