[Mac] Implement the system dictionary popup by implementing NSTextInput methods.

chrome/renderer/chrome_content_renderer_client.cc

Index: chrome/renderer/chrome_content_renderer_client.cc
diff --git a/chrome/renderer/chrome_content_renderer_client.cc b/chrome/renderer/chrome_content_renderer_client.cc
index 0703b7b958c49d4df8ae8f91a1588bba75fe0115..65b3d6368b6f5b469cbd493005c23f62a08aa6ba 100644
--- a/chrome/renderer/chrome_content_renderer_client.cc
+++ b/chrome/renderer/chrome_content_renderer_client.cc
@@ -36,6 +36,7 @@
 #include "chrome/renderer/safe_browsing/malware_dom_details.h"
 #include "chrome/renderer/safe_browsing/phishing_classifier_delegate.h"
 #include "chrome/renderer/searchbox.h"
+#include "chrome/renderer/text_input_client_observer.h"
 #include "chrome/renderer/translate_helper.h"
 #include "content/common/view_messages.h"
 #include "content/renderer/render_view.h"
@@ -115,6 +116,11 @@ void ChromeContentRendererClient::RenderViewCreated(RenderView* render_view) {
   }
 #endif
 
+#if defined(OS_MACOSX)
+  // Create the message filter for the TextInputClient.
+  new TextInputClientObserver(render_view);
+#endif  // defined(OS_MACOSX)
+
   // Observer for Malware DOM details messages.
   new safe_browsing::MalwareDOMDetails(render_view);