Enable WebAudio support on Android/x86.

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index 84d6da7a52cdb5ec34cf17a9ef213fedb5e06c9c..074b03724743ef1daf20a2f6f6fc2e5ebbf130d7 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -5975,12 +5975,22 @@ Keep your key file in a safe place. You will need it to create new versions of y
       <message name="IDS_FLAGS_DISABLE_WEBRTC_HW_ENCODING_DESCRIPTION" desc="Description of chrome:flags option to turn off WebRTC hardware video encoding support.">
         This option disables support in WebRTC for encoding video streams using platform hardware.
       </message>
-      <message name="IDS_FLAGS_DISABLE_WEBAUDIO_NAME" desc="Name of the 'Disable WebAudio' lab.">
-        Disable WebAudio
-      </message>
-      <message name="IDS_FLAGS_DISABLE_WEBAUDIO_DESCRIPTION" desc="Description for the flag to disable WebAudio.">
-        Enabling this option prevents web sites from accessing the WebAudio API.
-      </message>
+      <if expr="not pp_ifdef('use_webaudio_enable_message')">
+        <message name="IDS_FLAGS_DISABLE_WEBAUDIO_NAME" desc="Name of the 'Disable WebAudio' lab.">
+          Disable WebAudio
+        </message>
+        <message name="IDS_FLAGS_DISABLE_WEBAUDIO_DESCRIPTION" desc="Description for the flag to disable WebAudio.">
+          Enabling this option prevents web sites from accessing the WebAudio API.
+        </message>
+      </if>
+      <if expr="pp_ifdef('use_webaudio_enable_message')">
+        <message name="IDS_FLAGS_ENABLE_WEBAUDIO_NAME" desc="Name of the 'Enable WebAudio' lab.">
+          Enable WebAudio
+        </message>
+        <message name="IDS_FLAGS_ENABLE_WEBAUDIO_DESCRIPTION" desc="Description for the flag to enable WebAudio.">
+          Enabling this option allows web sites to access the WebAudio API.
+        </message>
+      </if>
       <message name="IDS_FLAGS_FIXED_POSITION_CREATES_STACKING_CONTEXT_NAME" desc="Name of the 'Fixed position creates stacking context' lab.">
         Fixed position elements create stacking contexts.
       </message>