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

pdf/pdf_engine.h

Index: pdf/pdf_engine.h
diff --git a/pdf/pdf_engine.h b/pdf/pdf_engine.h
index 5bba8b9f86061216229b6d582e3f8722ed840e9d..7770e667055fcd197e0aa47156c5e44e82cb9e00 100644
--- a/pdf/pdf_engine.h
+++ b/pdf/pdf_engine.h
@@ -27,6 +27,7 @@
 #include "ppapi/cpp/size.h"
 #include "ppapi/cpp/url_loader.h"
 #include "ppapi/cpp/var_array.h"
+#include "ui/base/window_open_disposition.h"
 
 namespace pp {
 class InputEvent;
@@ -80,7 +81,8 @@ class PDFEngine {
     virtual void ScrollToPage(int page) = 0;
 
     // Navigate to the given url.
-    virtual void NavigateTo(const std::string& url, bool open_in_new_tab) = 0;
+    virtual void NavigateTo(const std::string& url,
+                            WindowOpenDisposition disposition) = 0;
 
     // Updates the cursor.
     virtual void UpdateCursor(PP_CursorType_Dev cursor) = 0;