New method: InputMethod::IsCandidatePopupOpen()

ui/base/ime/input_method_imm32.h

Index: ui/base/ime/input_method_imm32.h
diff --git a/ui/base/ime/input_method_imm32.h b/ui/base/ime/input_method_imm32.h
old mode 100644
new mode 100755
index 25bac6015059f3deb3e4f10ebcf32d6a36255536..a67d79681ce4b6a65c9a36754cffa09d1c583b58
--- a/ui/base/ime/input_method_imm32.h
+++ b/ui/base/ime/input_method_imm32.h
@@ -30,6 +30,7 @@ class UI_EXPORT InputMethodIMM32 : public InputMethodWin {
   virtual void OnCaretBoundsChanged(const TextInputClient* client) OVERRIDE;
   virtual void CancelComposition(const TextInputClient* client) OVERRIDE;
   virtual void SetFocusedTextInputClient(TextInputClient* client) OVERRIDE;
+  virtual bool IsCandidatePopupOpen() const OVERRIDE;
 
  protected:
   // Overridden from InputMethodBase:
@@ -59,6 +60,10 @@ class UI_EXPORT InputMethodIMM32 : public InputMethodWin {
                               WPARAM wparam,
                               LPARAM lparam,
                               BOOL* handled);
+  LRESULT OnImeNotify(UINT message,
+                      WPARAM wparam,
+                      LPARAM lparam,
+                      BOOL* handled);
 
   // Asks the client to confirm current composition text.
   void ConfirmCompositionText();
@@ -72,6 +77,9 @@ class UI_EXPORT InputMethodIMM32 : public InputMethodWin {
 
   bool enabled_;
 
+  // True if we know for sure that a candidate window is open.
+  bool is_candidate_popup_open_;
+
   // Window handle where composition is on-going. NULL when there is no
   // composition.
   HWND composing_window_handle_;