mojo: Plumb through sufficient context to make real blink::WebInputEvents.

ui/events/event_utils.cc

Index: ui/events/event_utils.cc
diff --git a/ui/events/event_utils.cc b/ui/events/event_utils.cc
index 021ac278708168b8344b3f1ca5364c239ee0a27a..c775e10957a447c73b8668a9b67007686102a004 100644
--- a/ui/events/event_utils.cc
+++ b/ui/events/event_utils.cc
@@ -63,6 +63,53 @@ scoped_ptr<Event> EventFromNative(const base::NativeEvent& native_event) {
   return event.Pass();
 }
 
+#if defined(OS_LINUX)
+// From third_party/WebKit/Source/web/gtk/WebInputEventFactory.cpp:
+uint16 GetControlCharacterForKeycode(int windows_key_code, bool shift) {
+  if (windows_key_code >= ui::VKEY_A &&
+    windows_key_code <= ui::VKEY_Z) {
+    // ctrl-A ~ ctrl-Z map to \x01 ~ \x1A
+    return windows_key_code - ui::VKEY_A + 1;
+  }
+  if (shift) {
+    // following graphics chars require shift key to input.
+    switch (windows_key_code) {
+      // ctrl-@ maps to \x00 (Null byte)
+      case ui::VKEY_2:
+        return 0;
+      // ctrl-^ maps to \x1E (Record separator, Information separator two)
+      case ui::VKEY_6:
+        return 0x1E;
+      // ctrl-_ maps to \x1F (Unit separator, Information separator one)
+      case ui::VKEY_OEM_MINUS:
+        return 0x1F;
+      // Returns 0 for all other keys to avoid inputting unexpected chars.
+      default:
+        break;
+    }
+  } else {
+    switch (windows_key_code) {
+      // ctrl-[ maps to \x1B (Escape)
+      case ui::VKEY_OEM_4:
+        return 0x1B;
+      // ctrl-\ maps to \x1C (File separator, Information separator four)
+      case ui::VKEY_OEM_5:
+        return 0x1C;
+      // ctrl-] maps to \x1D (Group separator, Information separator three)
+      case ui::VKEY_OEM_6:
+        return 0x1D;
+      // ctrl-Enter maps to \x0A (Line feed)
+      case ui::VKEY_RETURN:
+        return 0x0A;
+      // Returns 0 for all other keys to avoid inputting unexpected chars.
+      default:
+        break;
+    }
+  }
+  return 0;
+}
+#endif
+
 int RegisterCustomEventType() {
   return ++g_custom_event_types;
 }