Simulate click through gamepad BUTTON_A

third_party/WebKit/Source/core/html/forms/RadioInputType.cpp

Index: third_party/WebKit/Source/core/html/forms/RadioInputType.cpp
diff --git a/third_party/WebKit/Source/core/html/forms/RadioInputType.cpp b/third_party/WebKit/Source/core/html/forms/RadioInputType.cpp
index eca599df57a6362b148961f68780535b40e66d83..6786d8517d866233d5569baf8d72784d19cf0b08 100644
--- a/third_party/WebKit/Source/core/html/forms/RadioInputType.cpp
+++ b/third_party/WebKit/Source/core/html/forms/RadioInputType.cpp
@@ -127,7 +127,7 @@ void RadioInputType::handleKeydownEvent(KeyboardEvent* event)
 void RadioInputType::handleKeyupEvent(KeyboardEvent* event)
 {
     const String& key = event->keyIdentifier();
-    if (key != "U+0020")
+    if (key != "U+0020" && key != "Enter")

[aelias_OOO_until_Jul13, 2016/02/10 07:09:21]

For some reason, you're changing behavior globally on all platforms to make
Enter select radio buttons (and the other stuff) when it was only Spacebar that
had that effect before.  I don't see any reason why that change should be made.

         return;
     // If an unselected radio is tabbed into (because the entire group has nothing
     // checked, or because of some explicit .focus() call), then allow space to check it.