Refactors keyboard related code so mash can use a keyboard

chrome/browser/chromeos/chrome_browser_main_chromeos.cc

Index: chrome/browser/chromeos/chrome_browser_main_chromeos.cc
diff --git a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
index eb3d3a1854430900da260540b893328f2d94eef3..c1c71a24e6df8b446ff3d7c54c9b0283720b120f 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
@@ -152,6 +152,10 @@
 #include "chrome/browser/chromeos/events/xinput_hierarchy_changed_event_listener.h"
 #endif
 
+#if defined(MOJO_SHELL_CLIENT)
+#include "chrome/browser/chromeos/chrome_interface_factory.h"
+#endif
+
 namespace chromeos {
 
 namespace {
@@ -371,6 +375,13 @@ void ChromeBrowserMainPartsChromeos::PostMainMessageLoopStart() {
 // Threads are initialized between MainMessageLoopStart and MainMessageLoopRun.
 // about_flags settings are applied in ChromeBrowserMainParts::PreCreateThreads.
 void ChromeBrowserMainPartsChromeos::PreMainMessageLoopRun() {
+#if defined(MOJO_SHELL_CLIENT)
+  if (content::MojoShellConnection::Get()) {
+    interface_factory_.reset(new ChromeInterfaceFactory);
+    content::MojoShellConnection::Get()->AddListener(interface_factory_.get());
+  }
+#endif
+
   // Set the crypto thread after the IO thread has been created/started.
   TPMTokenLoader::Get()->SetCryptoTaskRunner(
       content::BrowserThread::GetMessageLoopProxyForThread(