Fix print preview close in gmail.

chrome/browser/printing/print_preview_dialog_controller.cc

Index: chrome/browser/printing/print_preview_dialog_controller.cc
diff --git a/chrome/browser/printing/print_preview_dialog_controller.cc b/chrome/browser/printing/print_preview_dialog_controller.cc
index 35635e61855c9432880f8c7a5f695ef1024f7361..7aa4b42ba3498729ec1d31d45c34e5461725f951 100644
--- a/chrome/browser/printing/print_preview_dialog_controller.cc
+++ b/chrome/browser/printing/print_preview_dialog_controller.cc
@@ -347,6 +347,14 @@ void PrintPreviewDialogController::OnNavEntryCommitted(
     NOTREACHED();
     return;
   }
+  if (details) {
+    ui::PageTransition type = details->entry->GetTransitionType();
+    content::NavigationType nav_type = details->type;
+    if (nav_type == content::NAVIGATION_TYPE_EXISTING_PAGE &&
+        (ui::PageTransitionCoreTypeIs(type, ui::PAGE_TRANSITION_TYPED) ||
+         ui::PageTransitionCoreTypeIs(type, ui::PAGE_TRANSITION_LINK)))
+      return;
+  }
 
   RemoveInitiator(contents);
 }