Customize SkFontMgr::Factory to control DirectWrite vs. GDI selection

content/renderer/renderer_main_platform_delegate_win.cc

 // Copyright (c) 2012 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.
 
 #include "content/renderer/renderer_main_platform_delegate.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 #include "base/win/scoped_comptr.h"
 #include "base/win/win_util.h"
 #include "base/win/windows_version.h"
 #include "content/common/sandbox_win.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/injection_test_win.h"
 #include "content/public/renderer/render_font_warmup_win.h"
 #include "content/public/renderer/render_thread.h"
 #include "content/renderer/render_thread_impl.h"
 #include "sandbox/win/src/sandbox.h"
+#include "skia/ext/fontmgr_default_win.h"
 #include "skia/ext/vector_platform_device_emf_win.h"
 #include "third_party/WebKit/public/web/WebRuntimeFeatures.h"
 #include "third_party/WebKit/public/web/win/WebFontRendering.h"
 #include "third_party/icu/source/i18n/unicode/timezone.h"
 #include "third_party/skia/include/ports/SkFontMgr.h"
 #include "third_party/skia/include/ports/SkTypeface_win.h"
 
 #ifdef ENABLE_VTUNE_JIT_INTERFACE
 #include "v8/src/third_party/vtune/v8-vtune.h"
 #endif
@@ skipping 22 matching lines @@
         base::string16(text, text_length));
   }
 }
 
 void WarmupDirectWrite() {
   // The objects used here are intentionally not freed as we want the Skia
   // code to use these objects after warmup.
   SkTypeface* typeface =
       GetPreSandboxWarmupFontMgr()->legacyCreateTypeface("Times New Roman", 0);
   DoPreSandboxWarmupForTypeface(typeface);
+  SetDefaultSkiaFactory(GetPreSandboxWarmupFontMgr());

[scottmg, 2014/06/18 19:08:31]

this has to be set from here rather than having the other side pull it when
necessary to avoid skia have a link dependency -> content.

 }
 
 }  // namespace
 
 RendererMainPlatformDelegate::RendererMainPlatformDelegate(
     const MainFunctionParams& parameters)
         : parameters_(parameters),
           sandbox_test_module_(NULL) {
 }
 
@@ skipping 51 matching lines @@
     ::GetUserDefaultLangID();
     ::GetUserDefaultLCID();
 
     target_services->LowerToken();
     return true;
   }
   return false;
 }
 
 }  // namespace content