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

chromeos/ime/component_extension_ime_manager.h

 // Copyright 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.
 
 #ifndef CHROMEOS_IME_COMPONENT_EXTENSION_IME_MANAGER_H_
 #define CHROMEOS_IME_COMPONENT_EXTENSION_IME_MANAGER_H_
 
 #include <map>
 #include <set>
 
@@ skipping 36 matching lines @@
 class CHROMEOS_EXPORT ComponentExtensionIMEManagerDelegate {
  public:
   ComponentExtensionIMEManagerDelegate();
   virtual ~ComponentExtensionIMEManagerDelegate();
 
   // Lists installed component extension IMEs.
   virtual std::vector<ComponentExtensionIME> ListIME() = 0;
 
   // 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;
 
   // Unloads component extension IME associated with |extension_id|.
   virtual void Unload(Profile* profile,
                       const std::string& extension_id,
                       const base::FilePath& path) = 0;
 };
 
@@ skipping 53 matching lines @@
   std::set<std::string> input_method_id_set_;
 
   std::set<std::string> login_layout_set_;
 
   DISALLOW_COPY_AND_ASSIGN(ComponentExtensionIMEManager);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_IME_COMPONENT_EXTENSION_IME_MANAGER_H_