Add pdf layer code for PDFium XFA module

pdf/pdfium/pdfium_engine.h

Index: pdf/pdfium/pdfium_engine.h
diff --git a/pdf/pdfium/pdfium_engine.h b/pdf/pdfium/pdfium_engine.h
index cb3d0f4030e8f0aa2cd497dfe4bb10f4559f4d57..c9990ee22be688ca4eca1a7184fa0d9294bbec62 100644
--- a/pdf/pdfium/pdfium_engine.h
+++ b/pdf/pdfium/pdfium_engine.h
@@ -473,6 +473,70 @@ class PDFiumEngine : public PDFEngine,
   static void Form_GotoPage(IPDF_JSPLATFORM* param, int page_number);
   static int Form_Browse(IPDF_JSPLATFORM* param, void* file_path, int length);
 
+#ifdef _PDF_USE_XFA_
+  static void Form_EmailTo(FPDF_FORMFILLINFO* pThis,

[Lei Zhang, 2014/11/06 04:08:08]

We also don't do Hungarian notation, so maybe make this |engine| and
static_cast() it to |engine_ptr| in the .cc file?

[Bo Xu, 2014/11/06 05:43:51]

I have matched the naming to other parts in the code as |param|

+                           FPDF_FILEHANDLER* fileHandler,

[Lei Zhang, 2014/11/06 04:08:08]

fileHandler -> file_handler

+                           FPDF_WIDESTRING to,
+                           FPDF_WIDESTRING subject,
+                           FPDF_WIDESTRING cc,
+                           FPDF_WIDESTRING bcc,
+                           FPDF_WIDESTRING message);
+  static void Form_DisplayCaret(FPDF_FORMFILLINFO* pThis,
+                                FPDF_PAGE page,
+                                FPDF_BOOL bVisible,
+                                double left,
+                                double top,
+                                double right,
+                                double bottom);
+  static void Form_SetCurrentPage(FPDF_FORMFILLINFO* pThis,
+                                  FPDF_DOCUMENT document,
+                                  int iCurPage);
+  static int Form_GetCurrentPageIndex(FPDF_FORMFILLINFO* pThis,
+                                      FPDF_DOCUMENT document);
+  static void Form_GetPageViewRect(FPDF_FORMFILLINFO* pThis,
+                                   FPDF_PAGE page,
+                                   double* left,
+                                   double* top,
+                                   double* right,
+                                   double* bottom);
+  static int Form_GetPlatform(FPDF_FORMFILLINFO* pThis,
+                              void* platform,
+                              int length);
+  static FPDF_BOOL Form_PopupMenu(FPDF_FORMFILLINFO* pThis,
+                                  FPDF_PAGE page,
+                                  FPDF_WIDGET hWidget,
+                                  int menuFlag,
+                                  float x,
+                                  float y);
+  static FPDF_BOOL Form_PostRequestURL(FPDF_FORMFILLINFO* pThis,
+                                       FPDF_WIDESTRING wsURL,
+                                       FPDF_WIDESTRING wsData,
+                                       FPDF_WIDESTRING wsContentType,
+                                       FPDF_WIDESTRING wsEncode,
+                                       FPDF_WIDESTRING wsHeader,
+                                       FPDF_BSTR* respone);
+  static FPDF_BOOL Form_PutRequestURL(FPDF_FORMFILLINFO* pThis,
+                                      FPDF_WIDESTRING wsURL,
+                                      FPDF_WIDESTRING wsData,
+                                      FPDF_WIDESTRING wsEncode);
+  static void Form_UploadTo(FPDF_FORMFILLINFO* pThis,
+                            FPDF_FILEHANDLER* fileHandler,
+                            int fileFlag,
+                            FPDF_WIDESTRING uploadTo);
+  static FPDF_LPFILEHANDLER Form_DownloadFromURL(FPDF_FORMFILLINFO* pThis,
+                                                 FPDF_WIDESTRING URL);
+  static FPDF_FILEHANDLER* Form_OpenFile(FPDF_FORMFILLINFO* pThis,
+                                         int fileFlag,
+                                         FPDF_WIDESTRING wsURL,
+                                         const char* mode);
+  static void Form_GotoURL(FPDF_FORMFILLINFO* pThis,
+                           FPDF_DOCUMENT document,
+                           FPDF_WIDESTRING wsURL);
+  static int Form_GetLanguage(FPDF_FORMFILLINFO* pThis,
+                              void* language,
+                              int length);
+#endif // _PDF_USE_XFA_

[Lei Zhang, 2014/11/06 04:08:08]

nit: 2 spaces before //

+
   // IFSDK_PAUSE callbacks
   static FPDF_BOOL Pause_NeedToPauseNow(IFSDK_PAUSE* param);