Ensure that context menu->Print works in ChromeFrame.

Fixes bug http://code.google.com/p/chromium/issues/detail?id=83661

BUG=83661
Review URL: http://codereview.chromium.org/6992008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@86369 0039d316-1c4b-4281-b951-d872f2087c98

chrome_frame/chrome_frame_activex_base.h

@@ -24,6 +24,7 @@
 #include "base/win/scoped_comptr.h"
 #include "base/win/scoped_variant.h"
 #include "grit/chrome_frame_resources.h"
+#include "chrome/app/chrome_command_ids.h"
 #include "chrome/common/url_constants.h"
 #include "chrome_frame/chrome_frame_plugin.h"
 #include "chrome_frame/com_message_event.h"
@@ -352,6 +353,11 @@ END_MSG_MAP()
           DoFileDownloadInIE(UTF8ToWide(url.spec()).c_str());
           return true;
         }
+
+        case IDC_PRINT: {
+          automation_client_->PrintTab();
+          break;
+        }
       }
     }