New accessibility virtual keyboard behavior in non-sticky mode.

ui/base/ime/input_method.h

Index: ui/base/ime/input_method.h
diff --git a/ui/base/ime/input_method.h b/ui/base/ime/input_method.h
index cfa5583192520437d31f190346e3ced9c8a9192e..ae1522dd2bfa5661d7f62fba0ccd2e13e79c9c6c 100644
--- a/ui/base/ime/input_method.h
+++ b/ui/base/ime/input_method.h
@@ -15,6 +15,7 @@
 #include "build/build_config.h"
 #include "ui/base/ime/text_input_mode.h"
 #include "ui/base/ime/text_input_type.h"
+#include "ui/gfx/geometry/rect.h"
 
 namespace extensions {
 class InputImeApiTest;
@@ -160,6 +161,9 @@ class InputMethod {
   virtual void AddObserver(InputMethodObserver* observer) = 0;
   virtual void RemoveObserver(InputMethodObserver* observer) = 0;
 
+  // Set available screen bounds when virtual keyboard is active.
+  virtual void SetAvailableBounds(const gfx::Rect& new_bounds) {}
+
  protected:
   friend class extensions::InputImeApiTest;