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

content/browser/renderer_host/web_input_event_aura_unittest.cc

Index: content/browser/renderer_host/web_input_event_aura_unittest.cc
diff --git a/content/browser/renderer_host/web_input_event_aura_unittest.cc b/content/browser/renderer_host/web_input_event_aura_unittest.cc
index 9f0cf473a73395a72dcaaa54bfd04eb98f38763e..79e942d08dc22d8d2fcaa24f2dfee8574af1ded7 100644
--- a/content/browser/renderer_host/web_input_event_aura_unittest.cc
+++ b/content/browser/renderer_host/web_input_event_aura_unittest.cc
@@ -34,6 +34,8 @@ TEST(WebInputEventAuraTest, TestMakeWebKeyboardEvent) {
               webkit_event.modifiers);
     EXPECT_EQ(static_cast<int>(ui::DomCode::CONTROL_LEFT),
               webkit_event.domCode);
+    EXPECT_EQ(static_cast<int>(ui::DomKey::CONTROL),
+              webkit_event.domKey - DOM_KEY_PRINT_NON_DIFF);

[Wez, 2015/07/25 23:12:26]

As noted as per Kevin's request - if the DomKey values come first in the integer
Blink DOM key value space then this test no longer needs the ugly
DOM_KEY_PRINT_NON_DIFF subtraction.

[Habib Virji, 2015/07/31 16:17:29]

Done.

   }
   {
     // Release Ctrl.
@@ -44,6 +46,9 @@ TEST(WebInputEventAuraTest, TestMakeWebKeyboardEvent) {
     EXPECT_EQ(blink::WebInputEvent::IsLeft, webkit_event.modifiers);
     EXPECT_EQ(static_cast<int>(ui::DomCode::CONTROL_LEFT),
               webkit_event.domCode);
+    EXPECT_EQ(static_cast<int>(ui::DomKey::CONTROL),
+              webkit_event.domKey - DOM_KEY_PRINT_NON_DIFF);
+
   }
 #if defined(USE_X11)
   const int kLocationModifiers =