Changes to enable HTML5 autoplay for voice search.

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index 981532a79180ff753854080048e23abd7c8be194..74ccf6df66679482fc7c489fdc6cb72683f99b14 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -2256,6 +2256,10 @@ void ChromeContentBrowserClient::OverrideWebkitPrefs(
   web_prefs->device_scale_adjustment = GetDeviceScaleAdjustment();
   web_prefs->force_enable_zoom =
       prefs->GetBoolean(prefs::kWebKitForceEnableZoom);
+  // Enables media autoplay to support audio playback for voice searches.
+  // Disabled in VoiceSearchTabHelper.
+  web_prefs->user_gesture_required_for_media_playback =
+      !google_util::IsGoogleSearchUrl(url);

[Ted C, 2013/12/17 17:52:22]

also, should this be checking against the voice search URL instead of a generic
google one?

[apiccion, 2013/12/17 18:53:37]

https://codereview.chromium.org/106103006/

talked to pkasting and decided check google urls simpler. 

 #endif
 
 #if defined(OS_ANDROID)