DirectWrite Font Cache browser side hookup

content/public/common/dwrite_font_platform_win.h

 // Copyright 2014 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_COMMON_DWRITE_FONT_PLATFORM_WIN_H_
 #define CONTENT_COMMON_DWRITE_FONT_PLATFORM_WIN_H_
 
 #include "base/files/file.h"
 #include "content/common/content_export.h"
 
 struct IDWriteFactory;
 struct IDWriteFontCollection;
 
 namespace content {
 
+// This is the shared section that is used between browser and renderer for
+// loading font cache. Section name is suffixed with browser process id so that
+// multiple instance chrome scenario works fine.
+CONTENT_EXPORT extern const char kFontCacheSharedSectionName[];
+
 // Function returns custom font collection in terms of IDWriteFontCollection.
 // This function maintains singleton instance of font collection and returns
 // it on repeated calls.
 CONTENT_EXPORT IDWriteFontCollection* GetCustomFontCollection(
     IDWriteFactory* factory);
 
-// Build and load is to accomplish both tasks of creating a font cache within
-// specified file and then loading it, where loading means creating
-// readonly shared memory mapping. As this function need to iterate through all
+// Builds static font cache. As this function need to iterate through all
 // available fonts in the system, it may take a while.
-CONTENT_EXPORT bool BuildAndLoadFontCache(const base::FilePath& file);
+CONTENT_EXPORT bool BuildFontCache(const base::FilePath& file);
 
 // Loads font cache from file. This is supposed to be used from browser
 // side where loading means creating readonly shared memory file mapping so that
 // renderers can read from it.
 CONTENT_EXPORT bool LoadFontCache(const base::FilePath& path);
 
 // Added in header mainly for unittest
 CONTENT_EXPORT bool ValidateFontCacheFile(base::File* file);
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_DWRITE_FONT_PLATFORM_WIN_H_