android_webview: Enable FDO support for some targets.

android_webview/libwebviewchromium.gypi

 # Copyright 2014 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.
 {
   'type': 'shared_library',
   'android_unmangled_name': 1,
   'dependencies': [
     'android_webview_common',
   ],
   'conditions': [
@@ skipping 13 matching lines @@
         '../content/content.gyp:speech_recognition_error_java',
         '../media/media.gyp:media_android_imageformat_list',
         '../net/net.gyp:cert_verify_status_android_java',
         '../net/net.gyp:certificate_mime_types_java',
         '../net/net.gyp:net_errors_java',
         '../net/net.gyp:private_key_types_java',
         '../ui/android/ui_android.gyp:bitmap_format_java',
         '../ui/android/ui_android.gyp:page_transition_types_java',
         '../ui/android/ui_android.gyp:window_open_disposition_java',
       ],
+      # Enable feedback-directed optimisation for the library when building in
+      # android.
+      'aosp_build_settings': {
+        'LOCAL_FDO_SUPPORT': 'true',
+      },
     }],
     [ 'android_webview_build==1 and use_system_skia==0', {
       # When not using the system skia there are linker warnings about
       # overriden hidden symbols which there's no easy way to eliminate;
       # disable them. http://crbug.com/157326
       'ldflags': [
         '-Wl,--no-fatal-warnings',
       ],
       'ldflags!': [
         '-Wl,--fatal-warnings',
       ],
     }],
     ['android_webview_build==1 and use_system_stlport==1 and use_system_icu==0', {
       # ICU requires RTTI, which is not present in the system's stlport, so
       # we have to include gabi++. We can't include it in icu.gyp because
       # link_settings cannot be used inside target_conditions. This will be
       # removed once we stop using the system stlport.
       # http://crbug.com/409851
       'libraries': [
         '-lgabi++',
       ],
     }],
   ],
   'sources': [
     'lib/main/webview_entry_point.cc',
   ],
 }