Remove the compile time flag for DATALIST Element.

Source/WebKit/chromium/src/WebRuntimeFeatures.cpp

Index: Source/WebKit/chromium/src/WebRuntimeFeatures.cpp
diff --git a/Source/WebKit/chromium/src/WebRuntimeFeatures.cpp b/Source/WebKit/chromium/src/WebRuntimeFeatures.cpp
index 99b86406227bdfb408d34e01379621542cecb168..a1dba40703943770de78d8e420d188bc22361439 100644
--- a/Source/WebKit/chromium/src/WebRuntimeFeatures.cpp
+++ b/Source/WebKit/chromium/src/WebRuntimeFeatures.cpp
@@ -510,6 +510,16 @@ bool WebRuntimeFeatures::areExperimentalCanvasFeaturesEnabled()
     return RuntimeEnabledFeatures::experimentalCanvasFeaturesEnabled();
 }
 
+void WebRuntimeFeatures::enableDatalist(bool enable)
+{
+    RuntimeEnabledFeatures::setDatalistEnabled(enable);
+}
+
+bool WebRuntimeFeatures::isDatalistEnabled()
+{
+    return RuntimeEnabledFeatures::datalistEnabled();
+}
+
 void WebRuntimeFeatures::enableSpeechSynthesis(bool enable)
 {
     RuntimeEnabledFeatures::setSpeechSynthesisEnabled(enable);