Chromecast: use ARGB format for WebColor.

chromecast/shell/renderer/cast_content_renderer_client.cc

Index: chromecast/shell/renderer/cast_content_renderer_client.cc
diff --git a/chromecast/shell/renderer/cast_content_renderer_client.cc b/chromecast/shell/renderer/cast_content_renderer_client.cc
index 59e6c1f46915bd2c2e2362bab3bef7986a7cd370..d7cb87cad23436c1495a7490515840e7700bb439 100644
--- a/chromecast/shell/renderer/cast_content_renderer_client.cc
+++ b/chromecast/shell/renderer/cast_content_renderer_client.cc
@@ -21,8 +21,9 @@ namespace shell {
 
 namespace {
 
-// Default background color to set for WebViews
-const blink::WebColor kColorBlack = 0x000000FF;
+// Default background color to set for WebViews. WebColor is in ARGB format
+// though the comment of WebColor says it is in RGBA.
+const blink::WebColor kColorBlack = 0xFF000000;
 
 }  // namespace