Remove the WEB_AUDIO compile time flag

third_party/WebKit/Source/build/features.gypi

Index: third_party/WebKit/Source/build/features.gypi
diff --git a/third_party/WebKit/Source/build/features.gypi b/third_party/WebKit/Source/build/features.gypi
index 6f42735c4a0fcf61796d8b079562e5773c87766e..cc7026a21280e61a115fc5e90538d0ccb117c88c 100644
--- a/third_party/WebKit/Source/build/features.gypi
+++ b/third_party/WebKit/Source/build/features.gypi
@@ -67,7 +67,6 @@
       }, { # OS!=android
         'feature_defines': [
           'ENABLE_INPUT_MULTIPLE_FIELDS_UI=1',
-          'ENABLE_WEB_AUDIO=1',
           'WTF_USE_ICCJPEG=1',
           'WTF_USE_QCMSLIB=1'
         ],
@@ -86,9 +85,6 @@
       ['OS=="android" and use_openmax_dl_fft!=0', {
         'feature_defines': [
           'WTF_USE_WEBAUDIO_OPENMAX_DL_FFT=1',
-          # Enabling the FFT is enough to enable WebAudio support to
-          # allow most WebAudio features to work on Android.
-          'ENABLE_WEB_AUDIO=1',
         ],
       }],
       ['use_default_render_theme==1', {