Implement support for loading font files from outside system directory

content/test/dwrite_font_fake_sender_win.h

 // Copyright (c) 2015 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 CONTENT_TEST_DWRITE_FONT_FAKE_SENDER_WIN_H_
 #define CONTENT_TEST_DWRITE_FONT_FAKE_SENDER_WIN_H_
 
 #include <stddef.h>
 #include <stdint.h>
 #include <wrl.h>
 
 #include <memory>
 #include <utility>
 #include <vector>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/strings/string16.h"
 #include "ipc/ipc_message.h"
+#include "ipc/ipc_platform_file.h"
 #include "ipc/ipc_sender.h"
 
 struct DWriteFontStyle;
 struct MapCharactersResult;
 
 namespace content {
 
 class FakeFontCollection;
 
 // Creates a new FakeFontCollection, seeded with some basic data, and returns a
 // Sender that can be used to interact with the collection.
 IPC::Sender* CreateFakeCollectionSender();
 
 // Helper class for describing a font object. Use FakeFontCollection instead.
 class FakeFont {
  public:
   explicit FakeFont(const base::string16& name);
 
   FakeFont(const FakeFont& other);
 
   ~FakeFont();
 
   FakeFont& AddFilePath(const base::string16& file_path) {
     file_paths_.push_back(file_path);
     return *this;
   }
 
+  FakeFont& AddFileHandle(IPC::PlatformFileForTransit handle) {
+    file_handles_.push_back(handle);
+    return *this;
+  }
+
   FakeFont& AddFamilyName(const base::string16& locale,
                           const base::string16& family_name) {
     family_names_.emplace_back(locale, family_name);
     return *this;
   }
 
   const base::string16& font_name() { return font_name_; }
 
  private:
   friend FakeFontCollection;
   base::string16 font_name_;
   std::vector<base::string16> file_paths_;
+  std::vector<IPC::PlatformFileForTransit> file_handles_;
   std::vector<std::pair<base::string16, base::string16>> family_names_;
 
   DISALLOW_ASSIGN(FakeFont);
 };
 
 // Implements a font collection that supports interaction through sending IPC
 // messages from dwrite_font_proxy_messages.h.
 // Usage:
 //   Create a new FakeFontCollection.
 //   Call AddFont() to add fonts.
@@ skipping 41 matching lines @@
 
    private:
     void OnFindFamily(const base::string16& family_name, uint32_t* index);
 
     void OnGetFamilyCount(uint32_t* count);
 
     void OnGetFamilyNames(
         uint32_t family_index,
         std::vector<std::pair<base::string16, base::string16>>* family_names);
     void OnGetFontFiles(uint32_t family_index,
-                        std::vector<base::string16>* file_paths_);
+                        std::vector<base::string16>* file_paths,
+                        std::vector<IPC::PlatformFileForTransit>* file_handles);
 
     void OnMapCharacters(const base::string16& text,
                          const DWriteFontStyle& font_style,
                          const base::string16& locale_name,
                          uint32_t reading_direction,
                          const base::string16& base_family_name,
                          MapCharactersResult* result);
 
    private:
     scoped_refptr<FakeFontCollection> collection_;
@@ skipping 20 matching lines @@
 
   void OnFindFamily(const base::string16& family_name, uint32_t* index);
 
   void OnGetFamilyCount(uint32_t* count);
 
   void OnGetFamilyNames(
       uint32_t family_index,
       std::vector<std::pair<base::string16, base::string16>>* family_names);
 
   void OnGetFontFiles(uint32_t family_index,
-                      std::vector<base::string16>* file_paths);
+                      std::vector<base::string16>* file_paths,
+                      std::vector<IPC::PlatformFileForTransit>* file_handles);
 
   void OnMapCharacters(const base::string16& text,
                        const DWriteFontStyle& font_style,
                        const base::string16& locale_name,
                        uint32_t reading_direction,
                        const base::string16& base_family_name,
                        MapCharactersResult* result);
 
   std::unique_ptr<ReplySender> GetReplySender();
 
  private:
   friend class base::RefCounted<FakeFontCollection>;
   ~FakeFontCollection();
 
   std::vector<FakeFont> fonts_;
   std::vector<std::unique_ptr<IPC::Message>> messages_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeFontCollection);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_TEST_DWRITE_FONT_FAKE_SENDER_WIN_H_