Using alt and down key to open datalist using keyboard

Source/core/html/forms/TextFieldInputType.cpp

Index: Source/core/html/forms/TextFieldInputType.cpp
diff --git a/Source/core/html/forms/TextFieldInputType.cpp b/Source/core/html/forms/TextFieldInputType.cpp
index 041d0307d823880aa98a8326103e359f9742e37a..a21e5f7f6c085c63c1cd1e0124b6727bf26d6e7a 100644
--- a/Source/core/html/forms/TextFieldInputType.cpp
+++ b/Source/core/html/forms/TextFieldInputType.cpp
@@ -206,11 +206,16 @@ void TextFieldInputType::handleKeydownEventForSpinButton(KeyboardEvent* event)
     if (element().isDisabledOrReadOnly())
         return;
     const String& key = event->keyIdentifier();
-    if (key == "Up")
+    if (key == "Up") {
         spinButtonStepUp();
-    else if (key == "Down")
+    } else if (key == "Down" && !event->altKey()) {
         spinButtonStepDown();
-    else
+    } else if (key == "Down" && event->altKey()) {
+        if (Chrome* chrome = this->chrome()) {
+            chrome->client().handleKeyboardEventOnTextField(element(), *event);

[keishi, 2014/04/02 08:38:01]

I think if we return early without calling event->setDefaultHandled(),
handleKeyboardEventOnTextField will be called from
NumberInputType::handleKeydownEvent.

+            return;
+        }
+    } else
         return;
     event->setDefaultHandled();
 }