Delay Input.dispatchKeyEvent response until after key event ack.

content/browser/renderer_host/native_web_keyboard_event_android.cc

Index: content/browser/renderer_host/native_web_keyboard_event_android.cc
diff --git a/content/browser/renderer_host/native_web_keyboard_event_android.cc b/content/browser/renderer_host/native_web_keyboard_event_android.cc
index 94f3a4ac0be0ed69b6464a0c3b9ae309d5f3992f..be5f9913103186567966b77621eaa9e961c20eef 100644
--- a/content/browser/renderer_host/native_web_keyboard_event_android.cc
+++ b/content/browser/renderer_host/native_web_keyboard_event_android.cc
@@ -26,7 +26,8 @@ namespace content {
 
 NativeWebKeyboardEvent::NativeWebKeyboardEvent()
     : os_event(nullptr),
-      skip_in_browser(false) {
+      skip_in_browser(false),
+      is_synthetic(false) {
 }
 
 NativeWebKeyboardEvent::NativeWebKeyboardEvent(
@@ -49,7 +50,8 @@ NativeWebKeyboardEvent::NativeWebKeyboardEvent(
                                                       unicode_character,
                                                       is_system_key)),
       os_event(nullptr),
-      skip_in_browser(false) {
+      skip_in_browser(false),
+      is_synthetic(false) {
   if (!android_key_event.is_null())
     os_event = NewGlobalRefForKeyEvent(android_key_event.obj());
 }
@@ -58,7 +60,8 @@ NativeWebKeyboardEvent::NativeWebKeyboardEvent(
     const NativeWebKeyboardEvent& other)
     : WebKeyboardEvent(other),
       os_event(NewGlobalRefForKeyEvent(other.os_event)),
-      skip_in_browser(other.skip_in_browser) {
+      skip_in_browser(other.skip_in_browser),
+      is_synthetic(other.is_synthetic) {
 }
 
 NativeWebKeyboardEvent& NativeWebKeyboardEvent::operator=(
@@ -67,6 +70,7 @@ NativeWebKeyboardEvent& NativeWebKeyboardEvent::operator=(
 
   os_event = NewGlobalRefForKeyEvent(other.os_event);
   skip_in_browser = other.skip_in_browser;
+  is_synthetic = other.is_synthetic;
 
   return *this;
 }