Add experimental Support for DOM3 KeyboardEvent key value

Source/web/WebInputEventConversion.cpp

Index: Source/web/WebInputEventConversion.cpp
diff --git a/Source/web/WebInputEventConversion.cpp b/Source/web/WebInputEventConversion.cpp
index cbed77872613e974e82eb4645df0d704bb844fe6..21fe0bc7a6b7a22f3cb5786c03fd6191faea55e2 100644
--- a/Source/web/WebInputEventConversion.cpp
+++ b/Source/web/WebInputEventConversion.cpp
@@ -306,7 +306,9 @@ PlatformKeyboardEventBuilder::PlatformKeyboardEventBuilder(const WebKeyboardEven
     m_nativeVirtualKeyCode = e.nativeKeyCode;
     m_isKeypad = (e.modifiers & WebInputEvent::IsKeyPad);
     m_isSystemKey = e.isSystemKey;
+    // TODO: BUG482880 Fix this initialization to lazy initialization.

[Wez, 2015/05/06 01:32:13]

Do you mean "Fix |code| and |key| to be lazily-intialized"?

     m_code = Platform::current()->domCodeStringFromEnum(e.domCode);
+    m_key = Platform::current()->domKeyStringFromEnum(e.domKey);
 
     m_modifiers = toPlatformEventModifiers(e.modifiers);
 
@@ -627,6 +629,7 @@ WebKeyboardEventBuilder::WebKeyboardEventBuilder(const KeyboardEvent& event)
         return;
     nativeKeyCode = event.keyEvent()->nativeVirtualKeyCode();
     domCode = Platform::current()->domEnumFromCodeString(event.keyEvent()->code());
+    domKey = Platform::current()->domKeyEnumFromString(event.keyEvent()->key());
     unsigned numberOfCharacters = std::min(event.keyEvent()->text().length(), static_cast<unsigned>(textLengthCap));
     for (unsigned i = 0; i < numberOfCharacters; ++i) {
         text[i] = event.keyEvent()->text()[i];