Remove some global defines and build flags.

chrome/browser/extensions/component_loader.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/extensions/component_loader.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/files/file_util.h"
@@ skipping 345 matching lines @@
 void ComponentLoader::AddHotwordHelperExtension() {
 #if defined(ENABLE_HOTWORDING)
   if (HotwordServiceFactory::IsHotwordAllowed(profile_)) {
     Add(IDR_HOTWORD_MANIFEST,
         base::FilePath(FILE_PATH_LITERAL("hotword")));
   }
 #endif
 }
 
 void ComponentLoader::AddImageLoaderExtension() {
-#if defined(IMAGE_LOADER_EXTENSION)
+#if defined(OS_CHROMEOS)
   Add(IDR_IMAGE_LOADER_MANIFEST,
       base::FilePath(FILE_PATH_LITERAL("image_loader")));
-#endif  // defined(IMAGE_LOADER_EXTENSION)
+#endif  // defined(OS_CHROMEOS)
 }
 
 void ComponentLoader::AddNetworkSpeechSynthesisExtension() {
   Add(IDR_NETWORK_SPEECH_SYNTHESIS_MANIFEST,
       base::FilePath(FILE_PATH_LITERAL("network_speech_synthesis")));
 }
 
 #if defined(OS_CHROMEOS)
 void ComponentLoader::AddChromeOsSpeechSynthesisExtension() {
   AddComponentFromDir(
@@ skipping 316 matching lines @@
       manifest.release(),
       root_directory,
       false);
   CHECK_EQ(extension_id, actual_extension_id);
   if (!done_cb.is_null())
     done_cb.Run();
 }
 #endif
 
 }  // namespace extensions