gn: Add chromium_builder_asan target.

build/all.gyp

 # 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.
 
 {
   'variables': {
     # A hook that can be overridden in other repositories to add additional
     # compilation targets to 'All'.
     'app_targets%': [],
     # For Android-specific targets.
@@ skipping 690 matching lines @@
               'dependencies': [
                 '../tools/ipc_fuzzer/ipc_fuzzer.gyp:*',
               ],
             }],
             ['chromeos==0', {
               'dependencies': [
                 '../v8/samples/samples.gyp:v8_shell#host',
                 '../third_party/pdfium/samples/samples.gyp:pdfium_test',
               ],
             }],
+            # TODO(thakis): Remove this block, nothing ever sets this.
             ['internal_filter_fuzzer==1', {
               'dependencies': [
                 '../skia/tools/clusterfuzz-data/fuzzers/filter_fuzzer/filter_fuzzer.gyp:filter_fuzzer',
               ],
             }], # internal_filter_fuzzer
             ['clang==1', {
               'dependencies': [
                 'sanitizers/sanitizers.gyp:llvm-symbolizer',
               ],
             }],
@@ skipping 620 matching lines @@
           'dependencies': [
             '../ui/views/examples/examples.gyp:views_examples_with_content_exe',
             '../ui/views/views.gyp:views',
             '../ui/views/views.gyp:views_unittests',
           ],
         },  # target_name: macviews_builder
       ],  # targets
     }],  # os=='mac' and toolkit_views==1
   ],  # conditions
 }