Split PDFiumEngineExports into its own file.

Change-Id: Iee154e8ecf72ab6be0cb40feed764ffbbeab803e
Reviewed-on: https://chromium-review.googlesource.com/1038889Reviewed-by: dsinclair <dsinclair@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#555845}

pdf/BUILD.gn

@@ -82,6 +82,8 @@ if (enable_pdf) {
         "pdfium/pdfium_assert_matching_enums.cc",
         "pdfium/pdfium_engine.cc",
         "pdfium/pdfium_engine.h",
+        "pdfium/pdfium_engine_exports.cc",
+        "pdfium/pdfium_engine_exports.h",
         "pdfium/pdfium_mem_buffer_file_read.cc",
         "pdfium/pdfium_mem_buffer_file_read.h",
         "pdfium/pdfium_mem_buffer_file_write.cc",

pdf/pdf_engine.h

@@ -449,6 +449,7 @@ class PDFEngineExports {
 
   PDFEngineExports() {}
   virtual ~PDFEngineExports() {}
+
   static PDFEngineExports* Get();
 
 #if defined(OS_WIN)

pdf/pdfium/pdfium_engine.h

@@ -868,39 +868,6 @@ class ScopedSubstFont {
   DISALLOW_COPY_AND_ASSIGN(ScopedSubstFont);
 };
 
-class PDFiumEngineExports : public PDFEngineExports {
- public:
-  PDFiumEngineExports() {}
-
-// PDFEngineExports:
-#if defined(OS_WIN)
-  bool RenderPDFPageToDC(const void* pdf_buffer,
-                         int buffer_size,
-                         int page_number,
-                         const RenderingSettings& settings,
-                         HDC dc) override;
-  void SetPDFEnsureTypefaceCharactersAccessible(
-      PDFEnsureTypefaceCharactersAccessible func) override;
-
-  void SetPDFUseGDIPrinting(bool enable) override;
-  void SetPDFUsePrintMode(int mode) override;
-#endif  // defined(OS_WIN)
-  bool RenderPDFPageToBitmap(const void* pdf_buffer,
-                             int pdf_buffer_size,
-                             int page_number,
-                             const RenderingSettings& settings,
-                             void* bitmap_buffer) override;
-  bool GetPDFDocInfo(const void* pdf_buffer,
-                     int buffer_size,
-                     int* page_count,
-                     double* max_page_width) override;
-  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_

pdf/pdfium/pdfium_engine_exports.h

+// Copyright 2018 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_EXPORTS_H_
+#define PDF_PDFIUM_PDFIUM_ENGINE_EXPORTS_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+#include "build/build_config.h"
+#include "pdf/pdf_engine.h"
+
+namespace chrome_pdf {
+
+class PDFiumEngineExports : public PDFEngineExports {
+ public:
+  PDFiumEngineExports();
+  ~PDFiumEngineExports() override;
+
+// PDFEngineExports:
+#if defined(OS_WIN)
+  bool RenderPDFPageToDC(const void* pdf_buffer,
+                         int buffer_size,
+                         int page_number,
+                         const RenderingSettings& settings,
+                         HDC dc) override;
+  void SetPDFEnsureTypefaceCharactersAccessible(
+      PDFEnsureTypefaceCharactersAccessible func) override;
+
+  void SetPDFUseGDIPrinting(bool enable) override;
+  void SetPDFUsePrintMode(int mode) override;
+#endif  // defined(OS_WIN)
+  bool RenderPDFPageToBitmap(const void* pdf_buffer,
+                             int pdf_buffer_size,
+                             int page_number,
+                             const RenderingSettings& settings,
+                             void* bitmap_buffer) override;
+  bool GetPDFDocInfo(const void* pdf_buffer,
+                     int buffer_size,
+                     int* page_count,
+                     double* max_page_width) override;
+  bool GetPDFPageSizeByIndex(const void* pdf_buffer,
+                             int pdf_buffer_size,
+                             int page_number,
+                             double* width,
+                             double* height) override;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(PDFiumEngineExports);
+};
+
+}  // namespace chrome_pdf
+
+#endif  // PDF_PDFIUM_PDFIUM_ENGINE_EXPORTS_H_