Prepare for color input datalist support on Android

Source/core/html/ColorInputType.cpp

Index: Source/core/html/ColorInputType.cpp
diff --git a/Source/core/html/ColorInputType.cpp b/Source/core/html/ColorInputType.cpp
index 6c2c716f3464a467a4505c56071b1901bda1d342..4df97a8baa02523b7a77486a41531fd21790d129 100644
--- a/Source/core/html/ColorInputType.cpp
+++ b/Source/core/html/ColorInputType.cpp
@@ -244,4 +244,24 @@ Vector<Color> ColorInputType::suggestions() const
     return suggestions;
 }
 
+Vector<String> ColorInputType::suggestionLabels() const
+{
+    Vector<String> suggestionLabels;
+    if (RuntimeEnabledFeatures::dataListElementEnabled()) {
+        HTMLDataListElement* dataList = element()->dataList();
+        if (dataList) {
+            RefPtr<HTMLCollection> options = dataList->options();
+            for (unsigned i = 0; HTMLOptionElement* option = toHTMLOptionElement(options->item(i)); i++) {
+                if (!element()->isValidValue(option->value()))
+                    continue;
+                StyleColor color(option->value());
+                if (!color.isValid())
+                    continue;
+                suggestionLabels.append(option->label());
+            }
+        }
+    }
+    return suggestionLabels;
+}
+
 } // namespace WebCore