make it possible to disable libflac and libspeex in content

content/content_browser.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.
 
 {
+  'enable_libflac%': 1,
+  'enable_libspeex%': 1,
+
   'dependencies': [
     'browser/speech/proto/speech_proto.gyp:speech_proto',
     '../base/base.gyp:base_static',
     '../crypto/crypto.gyp:crypto',
     '../google_apis/google_apis.gyp:google_apis',
     '../net/net.gyp:net',
     '../skia/skia.gyp:skia',
     '../third_party/re2/re2.gyp:re2',
     '../third_party/zlib/zlib.gyp:zlib',
     '../ui/snapshot/snapshot.gyp:snapshot',
@@ skipping 1154 matching lines @@
         ],
       },
       'sources!': [
         'browser/geolocation/network_location_provider.cc',
         'browser/geolocation/network_location_provider.h',
         'browser/geolocation/network_location_request.cc',
         'browser/geolocation/network_location_request.h',
         'browser/tracing/tracing_ui.cc',
         'browser/tracing/tracing_ui.h',
       ],
-    }, { # OS!="android"
+      'enable_libflac%': 0,

[Paweł Hajdan Jr., 2013/04/03 23:53:10]

This does not look like valid gyp code for me (it's outside of variables).

+      'enable_libspeex%': 0,
+    }],
+    ['enable_libflac==1', {

[Paweł Hajdan Jr., 2013/04/03 23:53:10]

This won't work correctly either - I don't see anything that would change the
_actual_ dependency - this code only changes the _declared_ dependency.

       'dependencies': [
         '../third_party/flac/flac.gyp:libflac',
+      ],
+    }],
+    ['enable_libspeex==1', {
+      'dependencies': [
         '../third_party/speex/speex.gyp:libspeex',
       ],
     }],
     ['OS=="mac"', {
       'sources': [
         # Build necessary Mozilla sources
         '../third_party/mozilla/ComplexTextInputPanel.h',
         '../third_party/mozilla/ComplexTextInputPanel.mm',
         '../third_party/mozilla/NSPasteboard+Utils.h',
         '../third_party/mozilla/NSPasteboard+Utils.mm',
@@ skipping 109 matching lines @@
         ['exclude', '^browser/speech/'],
       ],
     }],
     ['linux_use_libgps==1', {
       'dependencies': [
         '../build/linux/system.gyp:libgps',
       ],
     }],
   ],
 }