Add GetTextInputMode function to TextInputClient.

ui/base/ime/text_input_client.h

Index: ui/base/ime/text_input_client.h
diff --git a/ui/base/ime/text_input_client.h b/ui/base/ime/text_input_client.h
index 82d0585f5f2050587e26ec3eac22fbb22a7f718d..2fd14a2cd4eb0f31ddf3507e69457c6c14aa44d9 100644
--- a/ui/base/ime/text_input_client.h
+++ b/ui/base/ime/text_input_client.h
@@ -9,6 +9,7 @@
 #include "base/i18n/rtl.h"
 #include "base/strings/string16.h"
 #include "ui/base/ime/composition_text.h"
+#include "ui/base/ime/text_input_mode.h"
 #include "ui/base/ime/text_input_type.h"
 #include "ui/base/range/range.h"
 #include "ui/base/ui_export.h"
@@ -63,6 +64,10 @@ class UI_EXPORT TextInputClient {
   // TEXT_INPUT_TYPE_NONE at runtime.
   virtual ui::TextInputType GetTextInputType() const = 0;
 
+  // Returns current text input mode. It could be changed and even becomes
+  // TEXT_INPUT_MODE_DEFAULT at runtime.
+  virtual ui::TextInputMode GetTextInputMode() const = 0;
+
   // Returns if the client supports inline composition currently.
   virtual bool CanComposeInline() const = 0;