[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 4b4f974e125b56c6ebf54b31789fa4814e9dc89b..6afaf0fcf8617b3f603b2d59ddbc2b8c3e4bc463 100644
--- a/chrome/renderer/chrome_content_renderer_client.cc
+++ b/chrome/renderer/chrome_content_renderer_client.cc
@@ -54,6 +54,7 @@
 #include "chrome/renderer/searchbox_extension.h"
 #include "chrome/renderer/spellchecker/spellcheck.h"
 #include "chrome/renderer/spellchecker/spellcheck_provider.h"
+#include "chrome/renderer/text_input_client_observer.h"
 #include "chrome/renderer/translate_helper.h"
 #include "chrome/renderer/visitedlink_slave.h"
 #include "content/common/view_messages.h"
@@ -192,6 +193,10 @@ void ChromeContentRendererClient::RenderViewCreated(RenderView* render_view) {
   new SpellCheckProvider(render_view, spellcheck_.get());
   new safe_browsing::MalwareDOMDetails(render_view);
 
+#if defined(OS_MACOSX)
+  new TextInputClientObserver(render_view);
+#endif  // defined(OS_MACOSX)
+
   PasswordAutofillManager* password_autofill_manager =
       new PasswordAutofillManager(render_view);
   AutofillAgent* autofill_agent = new AutofillAgent(render_view,