Pass --enable-webaudio command line from browser to renderer process.

This makes the webkitAudioContext constructor work as expected.

BUG=70633
TEST=verified manually that --enable-webaudio enables constructor

Review URL: http://codereview.chromium.org/6294012

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@72353 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/renderer_host/browser_render_process_host.cc

@@ -732,6 +732,7 @@ void BrowserRenderProcessHost::PropagateBrowserCommandLineToRenderer(
     switches::kEnableCrxlessWebApps,
     switches::kDisable3DAPIs,
     switches::kEnableInBrowserThumbnailing,
+    switches::kEnableWebAudio,
   };
   renderer_cmd->CopySwitchesFrom(browser_cmd, kSwitchNames,
                                  arraysize(kSwitchNames));