Build failure due to updated abseil

[sgn]

There are two new build failure, attached is 2 patches to fix those failures.

• mozc::FileUtil::FileExists changes return type from bool to absl::Status

  
  --- a/mozc/src/unix/fcitx/fcitx_mozc.cc
  +++ b/mozc/src/unix/fcitx/fcitx_mozc.cc
  @@ -413,7 +413,7 @@ void FcitxMozc::InitializeBar()
   );
  
   if ( mozc::FileUtil::FileExists ( mozc::FileUtil::JoinPath (

• mozc::SystemUtil::GetServerDirectory(), mozc::kMozcTool ) ) )
• mozc::SystemUtil::GetServerDirectory(), mozc::kMozcTool ) ).ok() ) { FcitxUIRegisterComplexStatus(instance, this, "mozc-tool",

• fcitx defines a macro named InvokeFunction which is conflict with abseil.

  
  --- a/mozc/src/unix/fcitx/surrounding_text_util.cc
  +++ b/mozc/src/unix/fcitx/surrounding_text_util.cc
  @@ -34,6 +34,10 @@
  #include <fcitx/instance.h>
  #include <fcitx/module/clipboard/fcitx-clipboard.h>

+#ifdef InvokeFunction +#undef InvokeFunction +#endif +

include "base/port.h"

include "base/logging.h"

include "base/util.h"

[shitamo]

Doesn't src/unix/fcitx/eim.cc also need #undef InvokeFunction?