Limit display of the virtual keyboard to state changes triggered from a user gesture.

ui/base/ime/input_method_observer.h

Index: ui/base/ime/input_method_observer.h
diff --git a/ui/base/ime/input_method_observer.h b/ui/base/ime/input_method_observer.h
index fc517cc46ed9f2d344736dd027d8782521939fb7..6aa81cf9b525be1112e966bcc79d8ba5e24af17f 100644
--- a/ui/base/ime/input_method_observer.h
+++ b/ui/base/ime/input_method_observer.h
@@ -48,6 +48,10 @@ class UI_EXPORT InputMethodObserver {
 
   // Called when the observed InputMethod is being destroyed.
   virtual void OnInputMethodDestroyed(const InputMethod* input_method) = 0;
+
+  // Called when a user gesture should trigger showing the virtual keyboard.
+  // Used in ChromeOS for the on screen keyboard.
+  virtual void OnShowVirtualKeyboard() = 0;
 };
 
 }  // namespace ui