Add run-time enable support for the web audio API...

webkit/glue/webpreferences.cc

 // Copyright (c) 2009 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.
 
 #include "webkit/glue/webpreferences.h"
 
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebRuntimeFeatures.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebKit.h"
@@ skipping 42 matching lines @@
       databases_enabled(false),
       application_cache_enabled(false),
       tabs_to_links(true),
       caret_browsing_enabled(false),
       hyperlink_auditing_enabled(true),
       user_style_sheet_enabled(false),
       author_and_user_styles_enabled(true),
       frame_flattening_enabled(false),
       allow_universal_access_from_file_urls(false),
       allow_file_access_from_file_urls(false),
+      webaudio_enabled(false),
       experimental_webgl_enabled(false),
       show_composited_layer_borders(false),
       accelerated_compositing_enabled(false),
       accelerated_layers_enabled(false),
       accelerated_video_enabled(false),
       accelerated_2d_canvas_enabled(false),
       accelerated_plugins_enabled(false),
       memory_info_enabled(false) {
 }
 
@@ skipping 61 matching lines @@
   // universal access. Only test shell will enable this.
   settings->setAllowUniversalAccessFromFileURLs(
       allow_universal_access_from_file_urls);
   settings->setAllowFileAccessFromFileURLs(allow_file_access_from_file_urls);
 
   // We prevent WebKit from checking if it needs to add a "text direction"
   // submenu to a context menu. it is not only because we don't need the result
   // but also because it cause a possible crash in Editor::hasBidiSelection().
   settings->setTextDirectionSubmenuInclusionBehaviorNeverIncluded();
 
+  // Enable the web audio API if requested on the command line.
+  settings->setWebAudioEnabled(webaudio_enabled);
+
   // Enable experimental WebGL support if requested on command line
   // and support is compiled in.
   bool enable_webgl =
       WebRuntimeFeatures::isWebGLEnabled() && experimental_webgl_enabled;
   settings->setExperimentalWebGLEnabled(enable_webgl);
 
   // Display colored borders around composited render layers if requested
   // on command line.
   settings->setShowDebugBorders(show_composited_layer_borders);
 
@@ skipping 25 matching lines @@
 
   for (WebInspectorPreferences::const_iterator it = inspector_settings.begin();
        it != inspector_settings.end(); ++it)
     web_view->setInspectorSetting(WebString::fromUTF8(it->first),
                                   WebString::fromUTF8(it->second));
 
   // Tabs to link is not part of the settings. WebCore calls
   // ChromeClient::tabsToLinks which is part of the glue code.
   web_view->setTabsToLinks(tabs_to_links);
 }