Allow pdfium_test to send simple events to each page.

testing/test_support.h

 // Copyright 2015 PDFium 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 TESTING_TEST_SUPPORT_H_
 #define TESTING_TEST_SUPPORT_H_
 
 #include <stdlib.h>
 #include <memory>
 #include <string>
+#include <vector>
 
 #include "public/fpdf_save.h"
 #include "public/fpdfview.h"
 
 #ifdef PDF_ENABLE_V8
 #include "v8/include/v8.h"
 #endif  // PDF_ENABLE_V8
 
 namespace pdfium {
 
@@ skipping 35 matching lines @@
 struct FreeDeleter {
   inline void operator()(void* ptr) const { free(ptr); }
 };
 
 }  // namespace pdfium
 
 // Reads the entire contents of a file into a newly alloc'd buffer.
 std::unique_ptr<char, pdfium::FreeDeleter> GetFileContents(const char* filename,
                                                            size_t* retlen);
 
+std::vector<std::string> StringSplit(const std::string& str, char delimiter);
+
 // Converts a FPDF_WIDESTRING to a std::wstring.
 // Deals with differences between UTF16LE and wchar_t.
 std::wstring GetPlatformWString(const FPDF_WIDESTRING wstr);
 
 // Returns a newly allocated FPDF_WIDESTRING.
 // Deals with differences between UTF16LE and wchar_t.
 std::unique_ptr<unsigned short, pdfium::FreeDeleter> GetFPDFWideString(
     const std::wstring& wstr);
 
 #ifdef PDF_ENABLE_V8
@@ skipping 30 matching lines @@
 
  private:
   static int WriteBlockCallback(FPDF_FILEWRITE* pFileWrite,
                                 const void* data,
                                 unsigned long size);
 
   std::string m_String;
 };
 
 #endif  // TESTING_TEST_SUPPORT_H_