Chromecast: disables WebKit's overlay play controls.

chromecast/renderer/cast_content_renderer_client.cc

Index: chromecast/renderer/cast_content_renderer_client.cc
diff --git a/chromecast/renderer/cast_content_renderer_client.cc b/chromecast/renderer/cast_content_renderer_client.cc
index 60f117b13070043ca24cc84dc925481c998fc14a..2a3c4d5bc778c2a5b5792a43e5a2b43559601c53 100644
--- a/chromecast/renderer/cast_content_renderer_client.cc
+++ b/chromecast/renderer/cast_content_renderer_client.cc
@@ -44,7 +44,11 @@ void CastContentRendererClient::RenderViewCreated(
   blink::WebView* webview = render_view->GetWebView();
   if (webview) {
     webview->setBaseBackgroundColor(kColorBlack);
+
+    // The following settings express consistent behaviors across Cast
+    // embedders, though Android has enabled by default for mobile browsers.
     webview->settings()->setShrinksViewportContentToFit(false);
+    webview->settings()->setMediaControlsOverlayPlayButtonEnabled(false);
   }
 }