[KeyboardEvent] Add embedder APIs to translate between Dom |key| enum and strings

content/shell/renderer/test_runner/event_sender.cc

Index: content/shell/renderer/test_runner/event_sender.cc
diff --git a/content/shell/renderer/test_runner/event_sender.cc b/content/shell/renderer/test_runner/event_sender.cc
index f4948b60df0def7b27cfd9309fe802bd4de9b0bf..9f1adcb654b26b4c1271738b8a1ffa1531944677 100644
--- a/content/shell/renderer/test_runner/event_sender.cc
+++ b/content/shell/renderer/test_runner/event_sender.cc
@@ -1272,6 +1272,7 @@ void EventSender::KeyDown(const std::string& code_str,
   int text = 0;
   bool needs_shift_key_modifier = false;
   std::string domString;
+  std::string domKey;
 
   if ("\n" == code_str) {
     generate_char = true;
@@ -1313,24 +1314,31 @@ void EventSender::KeyDown(const std::string& code_str,
   } else if ("menu" == code_str) {
     code = ui::VKEY_APPS;
     domString.assign("ContextMenu");
+    domKey.assign("MediaApps");
   } else if ("leftControl" == code_str) {
     code = ui::VKEY_LCONTROL;
     domString.assign("ControlLeft");
+    domKey.assign("Control");
   } else if ("rightControl" == code_str) {
     code = ui::VKEY_RCONTROL;
     domString.assign("ControlRight");
+    domKey.assign("Control");
   } else if ("leftShift" == code_str) {
     code = ui::VKEY_LSHIFT;
     domString.assign("ShiftLeft");
+    domKey.assign("Shift");
   } else if ("rightShift" == code_str) {
     code = ui::VKEY_RSHIFT;
     domString.assign("ShiftRight");
+    domKey.assign("Shift");
   } else if ("leftAlt" == code_str) {
     code = ui::VKEY_LMENU;
     domString.assign("AltLeft");
+    domKey.assign("Alt");
   } else if ("rightAlt" == code_str) {
     code = ui::VKEY_RMENU;
     domString.assign("AltRight");
+    domKey.assign("AltGraph");
   } else if ("numLock" == code_str) {
     code = ui::VKEY_NUMLOCK;
     domString.assign("NumLock");
@@ -1391,6 +1399,10 @@ void EventSender::KeyDown(const std::string& code_str,
   event_down.windowsKeyCode = code;
   event_down.domCode = static_cast<int>(
       ui::KeycodeConverter::CodeStringToDomCode(domString.c_str()));
+  if (domKey.empty())
+      domKey = domString;
+  event_down.domKey = static_cast<int>(
+      ui::KeycodeConverter::KeyStringToDomKey(domKey.c_str()));
 
   if (generate_char) {
     event_down.text[0] = text;