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

pdf/pdfium/pdfium_engine.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PDF_PDFIUM_PDFIUM_ENGINE_H_
 #define PDF_PDFIUM_PDFIUM_ENGINE_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 31 matching lines @@
 
 class PDFiumEngine : public PDFEngine,
                      public DocumentLoader::Client,
                      public FPDF_FORMFILLINFO,
                      public IPDF_JSPLATFORM,
                      public IFSDK_PAUSE {
  public:
   explicit PDFiumEngine(PDFEngine::Client* client);
   ~PDFiumEngine() override;
 
+  enum NavigateOption {

[dsinclair, 2016/07/21 13:34:05]

Can this be an enum class instead of a plain enum?

[jaepark, 2016/07/21 22:34:33]

Done.

+    OPEN_IN_CURRENT_TAB = 0,
+    OPEN_IN_NEW_BACKGROUND_TAB,
+    OPEN_IN_NEW_FOREGROUND_TAB,
+    OPEN_IN_NEW_WINDOW
+  };
+
   // PDFEngine implementation.
   bool New(const char* url, const char* headers) override;
   void PageOffsetUpdated(const pp::Point& page_offset) override;
   void PluginSizeUpdated(const pp::Size& size) override;
   void ScrolledToXPosition(int position) override;
   void ScrolledToYPosition(int position) override;
   void PrePaint() override;
   void Paint(const pp::Rect& rect,
              pp::ImageData* image_data,
              std::vector<pp::Rect>* ready,
@@ skipping 692 matching lines @@
   bool GetPDFPageSizeByIndex(const void* pdf_buffer,
                              int pdf_buffer_size,
                              int page_number,
                              double* width,
                              double* height) override;
 };
 
 }  // namespace chrome_pdf
 
 #endif  // PDF_PDFIUM_PDFIUM_ENGINE_H_