Add more components to the GN build.

components/navigation_interception.gypi

 # 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.
 
 {
   'targets': [
     {
+      # GN version: //components/navigation_interception
       'target_name': 'navigation_interception',
       'type': 'static_library',
       'defines!': ['CONTENT_IMPLEMENTATION'],
       'dependencies': [
         '../base/base.gyp:base',
         '../content/content.gyp:content_browser',
         '../content/content.gyp:content_common',
         '../net/net.gyp:net',
       ],
       'include_dirs': [
         '..',
         '../skia/config',
       ],
       'sources': [
+        # Note: sources list duplicated in GN build.
         'navigation_interception/intercept_navigation_resource_throttle.cc',
         'navigation_interception/intercept_navigation_resource_throttle.h',
         'navigation_interception/navigation_params.h',
         'navigation_interception/navigation_params.cc',
       ],
       'conditions': [
         ['OS=="android"', {
           'dependencies': [
             'navigation_interception_jni_headers',
           ],
           'sources': [
+            # Note: sources list duplicated in GN build.
             'navigation_interception/component_jni_registrar.cc',
             'navigation_interception/component_jni_registrar.h',
             'navigation_interception/intercept_navigation_delegate.cc',
             'navigation_interception/intercept_navigation_delegate.h',
             'navigation_interception/navigation_params_android.h',
             'navigation_interception/navigation_params_android.cc',
           ],
         }],
       ],
     },
   ],
   'conditions': [
     ['OS=="android"', {
       'targets': [
         {
           'target_name': 'navigation_interception_java',
           'type': 'none',
           'dependencies': [
             '../base/base.gyp:base',
           ],
           'variables': {
             'java_in_dir': 'navigation_interception/android/java',
           },
           'includes': [ '../build/java.gypi' ],
         },
         {
+          # GN version: //components/navigation_intercaption:jni_headers
           'target_name': 'navigation_interception_jni_headers',
           'type': 'none',
           'sources': [
+            # Note: sources list duplicated in GN build.
             'navigation_interception/android/java/src/org/chromium/components/navigation_interception/InterceptNavigationDelegate.java',
             'navigation_interception/android/java/src/org/chromium/components/navigation_interception/NavigationParams.java',
           ],
           'variables': {
             'jni_gen_package': 'navigation_interception',
           },
           'includes': [ '../build/jni_generator.gypi' ],
         },
       ],
     }],
   ],
 }