New accessibility virtual keyboard behavior in non-sticky mode.

ui/base/ime/input_method_base.cc

Index: ui/base/ime/input_method_base.cc
diff --git a/ui/base/ime/input_method_base.cc b/ui/base/ime/input_method_base.cc
index 9a37f8dfde652adc7b930b5d823687e6c3fcb79d..70e652c1ae0e8d9bd4d3818ad5deb21f0cdc7c7c 100644
--- a/ui/base/ime/input_method_base.cc
+++ b/ui/base/ime/input_method_base.cc
@@ -59,6 +59,12 @@ TextInputClient* InputMethodBase::GetTextInputClient() const {
   return text_input_client_;
 }
 
+void InputMethodBase::SetAvailableBounds(const gfx::Rect& new_bounds) {
+  available_bounds_ = new_bounds;
+  if (text_input_client_)
+    text_input_client_->EnsureCaretInRect(available_bounds_);
+}
+
 void InputMethodBase::OnTextInputTypeChanged(const TextInputClient* client) {
   if (!IsTextInputClientFocused(client))
     return;
@@ -141,6 +147,16 @@ void InputMethodBase::SetFocusedTextInputClientInternal(
   text_input_client_ = client;  // nullptr allowed.
   OnDidChangeFocusedClient(old, client);
   NotifyTextInputStateChanged(text_input_client_);
+
+  if (available_bounds_.IsEmpty())
+    return;
+
+  // Restore old focused window if moved.
+  if (old)
+    old->OnClientFocusLost();
+  // Move new focused window if necessary.
+  if (text_input_client_)
+    text_input_client_->EnsureCaretInRect(available_bounds_);
 }
 
 std::vector<gfx::Rect> InputMethodBase::GetCompositionBounds(