Handle ctrl + shift + left click on links in PDF.

pdf/preview_mode_client.cc

Index: pdf/preview_mode_client.cc
diff --git a/pdf/preview_mode_client.cc b/pdf/preview_mode_client.cc
index f1c3e4a4ff02e34a374cf0773d034bc8451bd102..e96f5f25e7a170bdb8547c11f93ede8a22c9c971 100644
--- a/pdf/preview_mode_client.cc
+++ b/pdf/preview_mode_client.cc
@@ -37,8 +37,7 @@ void PreviewModeClient::ScrollToPage(int page) {
   NOTREACHED();
 }
 
-void PreviewModeClient::NavigateTo(const std::string& url,
-                                   bool open_in_new_tab) {
+void PreviewModeClient::NavigateTo(const std::string& url, int option) {
   NOTREACHED();
 }