Return unique_ptrs from test_support functions

testing/embedder_test.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_EMBEDDER_TEST_H_
 #define TESTING_EMBEDDER_TEST_H_
 
 #include <map>
 #include <memory>
 #include <string>
 
 #include "public/fpdf_dataavail.h"
 #include "public/fpdf_ext.h"
 #include "public/fpdf_formfill.h"
 #include "public/fpdfview.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "testing/test_support.h"
 
 #ifdef PDF_ENABLE_V8
 #include "v8/include/v8.h"
 #endif  // PDF_ENABLE_v8
 
 class TestLoader;
 
 // This class is used to load a PDF document, and then run programatic
 // API tests against it.
 class EmbedderTest : public ::testing::Test,
@@ skipping 89 matching lines @@
   FPDF_FILEACCESS file_access_;
   FX_FILEAVAIL file_avail_;
 #ifdef PDF_ENABLE_V8
   v8::Platform* platform_;
   v8::StartupData natives_;
   v8::StartupData snapshot_;
 #endif  // PDF_ENABLE_V8
   void* external_isolate_;
   TestLoader* loader_;
   size_t file_length_;
-  char* file_contents_;
+  std::unique_ptr<char, pdfium::FreeDeleter> file_contents_;
 
  private:
   static void UnsupportedHandlerTrampoline(UNSUPPORT_INFO*, int type);
   static int AlertTrampoline(IPDF_JSPLATFORM* plaform,
                              FPDF_WIDESTRING message,
                              FPDF_WIDESTRING title,
                              int type,
                              int icon);
   static int SetTimerTrampoline(FPDF_FORMFILLINFO* info,
                                 int msecs,
                                 TimerCallback fn);
   static void KillTimerTrampoline(FPDF_FORMFILLINFO* info, int id);
   static FPDF_PAGE GetPageTrampoline(FPDF_FORMFILLINFO* info,
                                      FPDF_DOCUMENT document,
                                      int page_index);
 };
 
 #endif  // TESTING_EMBEDDER_TEST_H_