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 83cc99a243c368995c132ccca6858a3b6ab143a5..a099e9ce77886da3da40d39a9ed74da01a64af05
--- 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 IsPopupOpen() const OVERRIDE;
 
  protected:
   // Overridden from InputMethodBase:
@@ -55,6 +56,10 @@ 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();
@@ -64,6 +69,10 @@ class UI_EXPORT InputMethodIMM32 : public InputMethodWin {
 
   bool enabled_;
 
+  // True if a candidate window (or IME suggest, etc.) is open.
+  // False if not or unsure.
+  bool is_popup_open_;
+
   DISALLOW_COPY_AND_ASSIGN(InputMethodIMM32);
 };