Implement input type=color UI

content/public/browser/web_contents_delegate.cc

Index: content/public/browser/web_contents_delegate.cc
diff --git a/content/public/browser/web_contents_delegate.cc b/content/public/browser/web_contents_delegate.cc
index 39f8448710c8df932929a048bf9584187b136957..0e24df06f853bcbf81c2763e5bf1ddc6559f9e94 100644
--- a/content/public/browser/web_contents_delegate.cc
+++ b/content/public/browser/web_contents_delegate.cc
@@ -134,6 +134,12 @@ bool WebContentsDelegate::IsFullscreenForTab(const WebContents* tab) const {
   return false;
 }
 
+content::ColorChooser* WebContentsDelegate::OpenColorChooser(WebContents* tab,
+    int color_chooser_id,
+    const SkColor& color) {
+  return NULL;
+}
+
 void WebContentsDelegate::WebIntentDispatch(
     WebContents* tab,
     WebIntentsDispatcher* intents_dispatcher) {