Enable WebAudio support on Android/x86.

chrome/browser/about_flags.cc

Index: chrome/browser/about_flags.cc
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index e6aef05b20639ea0b0e693c1e1d12c8fbb8ac736..6591163133dc9d5b07341b46adc3fe2e851fc813 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -517,6 +517,15 @@ const Experiment kExperiments[] = {
   },
 #endif
 #if defined(OS_ANDROID)
+#if defined(ARCH_CPU_X86)
+  {
+      "enable-webaudio",
+      IDS_FLAGS_ENABLE_WEBAUDIO_NAME,
+      IDS_FLAGS_ENABLE_WEBAUDIO_DESCRIPTION,
+      kOsAndroid,
+      SINGLE_VALUE_TYPE(switches::kEnableWebAudio)
+  },
+#else
   {
     "disable-webaudio",
     IDS_FLAGS_DISABLE_WEBAUDIO_NAME,
@@ -525,6 +534,7 @@ const Experiment kExperiments[] = {
     SINGLE_VALUE_TYPE(switches::kDisableWebAudio)
   },
 #endif
+#endif
   {
     "fixed-position-creates-stacking-context",
     IDS_FLAGS_FIXED_POSITION_CREATES_STACKING_CONTEXT_NAME,