[Android] Synthetic composition event should have DomKey 'Unidentified'

content/browser/renderer_host/input/web_input_event_builders_android_unittest.cc

Index: content/browser/renderer_host/input/web_input_event_builders_android_unittest.cc
diff --git a/content/browser/renderer_host/input/web_input_event_builders_android_unittest.cc b/content/browser/renderer_host/input/web_input_event_builders_android_unittest.cc
index 586ea75589dd546770ce0bcba0879538280e5c13..32acccf5f5c46e2deadcd66f69ff8e68f9c2e15d 100644
--- a/content/browser/renderer_host/input/web_input_event_builders_android_unittest.cc
+++ b/content/browser/renderer_host/input/web_input_event_builders_android_unittest.cc
@@ -23,6 +23,7 @@ namespace {
 
 const int kCombiningAccent = 0x80000000;
 const int kCombiningAccentMask = 0x7fffffff;
+const int kCompositionKeyCode = 229;
 
 WebKeyboardEvent CreateFakeWebKeyboardEvent(JNIEnv* env,
                                             int key_code,
@@ -139,3 +140,14 @@ TEST(WebInputEventBuilderAndroidTest, DomKeyCtrlAlt) {
         << ui::KeycodeConverter::DomKeyToKeyString(web_event.domKey);
   }
 }
+
+TEST(WebInputEventBuilderAndroidTest, DomKeySyntheticKeyEvent) {
+  JNIEnv* env = AttachCurrentThread();
+
+  // Simulating ImeAdapter.java::sendCompositionToNative(), send
+  // COMPOSITION_KEY_CODE for synthetic key events.
+  WebKeyboardEvent web_event =
+      CreateFakeWebKeyboardEvent(env, kCompositionKeyCode, 0, 0);
+  EXPECT_EQ(kCompositionKeyCode, web_event.nativeKeyCode);
+  EXPECT_EQ(ui::DomKey::UNIDENTIFIED, web_event.domKey);
+}