Some linking fixes for GN build.

content/browser/tracing/tracing_resources.gyp

 # 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.
 
 {
   'variables': {
     'trace_viewer_src_dir': '../../../third_party/trace-viewer',
     'grit_out_dir': '<(SHARED_INTERMEDIATE_DIR)/content/browser/tracing',
   },
   'targets': [
     {
+      # GN version: //content/browser/tracing:generate_tracing_grd
       'target_name': 'generate_tracing_grd',
       'type': 'none',
       'dependencies': [
         '<(trace_viewer_src_dir)/trace_viewer.gyp:generate_about_tracing',
       ],
       'actions': [
         {
           'action_name': 'generate_tracing_grd',
           'script_name': 'generate_trace_viewer_grd.py',
           'input_pages': [
             '<(SHARED_INTERMEDIATE_DIR)/content/browser/tracing/about_tracing.html',
             '<(SHARED_INTERMEDIATE_DIR)/content/browser/tracing/about_tracing.js'
           ],
           'inputs': [
             '<@(_script_name)',
             '<@(_input_pages)'
           ],
           'outputs': [
             '<(SHARED_INTERMEDIATE_DIR)/content/browser/tracing/tracing_resources.grd'
           ],
           'action': [
             'python', '<@(_script_name)', '<@(_input_pages)', '--output', '<@(_outputs)'
           ]
         }
       ]
     },
 
     {
+      # GN version: //content/browser/tracing:resources
       'target_name': 'tracing_resources',
       'type': 'none',
       'dependencies': [
         '<(trace_viewer_src_dir)/trace_viewer.gyp:generate_about_tracing',
         'generate_tracing_grd',
       ],
       'variables': {
         'grit_out_dir': '<(SHARED_INTERMEDIATE_DIR)/content/browser/tracing',
       },
       'actions': [
@@ skipping 22 matching lines @@
                      '-D', 'SHARED_INTERMEDIATE_DIR=<(SHARED_INTERMEDIATE_DIR)',
                      '<@(grit_defines)',
                      '<@(grit_rc_header_format)'],
           'message': 'Generating resources from <(grit_grd_file)',
         }
       ],
       'includes': [ '../../../build/grit_target.gypi' ]
     }
   ]
 }