Bug 1307112 part.3 NativeKey::IsFollowedByNonControlCharMessage() should return true when one of following char messages is a printable char message r=m_kato

Currently, NativeKey::IsFollowedByNonControlCharMessage() returns true only when the first char message is a printable char message.  Although, I don't know actual cases coming printable WM_CHAR message after non-printable char message, i.e.,

1. WM_SYSCHAR or WM_DEADCHAR
2. WM_CHAR for a printable character

or

1. WM_CHAR with a non-printable character (a control character)
2. WM_CHAR with a printable character

, we should make it return true because when one or more characters are being inputted, we should ignore non-printable char messages and handle printable char messages in the path handling text input.

MozReview-Commit-ID: 1v7v5mCRFCP

--HG--
extra : rebase_source : f82f7b77376450168bad34be031164ecf7338621

widget/windows/KeyboardLayout.cpp

@@ -1661,10 +1661,12 @@ NativeKey::IsFollowedByDeadCharMessage() const
 bool
 NativeKey::IsFollowedByNonControlCharMessage() const
 {
-  if (mFollowingCharMsgs.IsEmpty()) {
+  for (size_t i = 0; i < mFollowingCharMsgs.Length(); ++i) {
-    return false;
+    if (IsPrintableCharMessage(mFollowingCharMsgs[i])) {
+      return true;
+    }
   }
-  return IsPrintableCharMessage(mFollowingCharMsgs[0]);
+  return false;
 }
 
 bool