Route IME-related IPCs to the active/focused RenderWidget (Mac)

content/browser/renderer_host/text_input_manager.cc

Index: content/browser/renderer_host/text_input_manager.cc
diff --git a/content/browser/renderer_host/text_input_manager.cc b/content/browser/renderer_host/text_input_manager.cc
index 3207b9218d82cffcd159782e786d8e237f3d88df..a587d2a8744c257b0e3e926b70bd9a12d5361bf9 100644
--- a/content/browser/renderer_host/text_input_manager.cc
+++ b/content/browser/renderer_host/text_input_manager.cc
@@ -266,6 +266,10 @@ void TextInputManager::RemoveObserver(Observer* observer) {
   observer_list_.RemoveObserver(observer);
 }
 
+bool TextInputManager::HasObserver(Observer* observer) const {
+  return observer_list_.HasObserver(observer);
+}
+
 size_t TextInputManager::GetRegisteredViewsCountForTesting() {
   return text_input_state_map_.size();
 }