Support DirectWrite with sandbox on

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/win_util.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/injection_test_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/vector_platform_device_emf_win.h"
 #include "third_party/icu/source/i18n/unicode/timezone.h"
 #include "third_party/skia/include/ports/SkTypeface_win.h"
+#include "third_party/skia/include/ports/SkFontMgr.h"
 
 #ifdef ENABLE_VTUNE_JIT_INTERFACE
 #include "v8/src/third_party/vtune/v8-vtune.h"
 #endif
 
 namespace content {
 namespace {
 
 // Windows-only skia sandbox support
 void SkiaPreCacheFont(const LOGFONT& logfont) {
   RenderThread* render_thread = RenderThread::Get();
   if (render_thread) {
     render_thread->PreCacheFont(logfont);
   }
 }
 
 void SkiaPreCacheFontCharacters(const LOGFONT& logfont,
                                 const wchar_t* text,
                                 unsigned int text_length) {
   RenderThreadImpl* render_thread_impl = RenderThreadImpl::current();
   if (render_thread_impl) {
     render_thread_impl->PreCacheFontCharacters(
         logfont,
         base::string16(text, text_length));
   }
 }
 
+SkFontMgr* gBeforeSandboxSkFontMgr;
+
 }  // namespace
 
 RendererMainPlatformDelegate::RendererMainPlatformDelegate(
     const MainFunctionParams& parameters)
         : parameters_(parameters),
           sandbox_test_module_(NULL) {
 }
 
 RendererMainPlatformDelegate::~RendererMainPlatformDelegate() {
 }
@@ skipping 14 matching lines @@
     // ICU DateFormat class (used in base/time_format.cc) needs to get the
     // Olson timezone ID by accessing the registry keys under
     // HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Time Zones.
     // After TimeZone::createDefault is called once here, the timezone ID is
     // cached and there's no more need to access the registry. If the sandbox
     // is disabled, we don't have to make this dummy call.
     scoped_ptr<icu::TimeZone> zone(icu::TimeZone::createDefault());
     SkTypeface_SetEnsureLOGFONTAccessibleProc(SkiaPreCacheFont);
     skia::SetSkiaEnsureTypefaceCharactersAccessible(
         SkiaPreCacheFontCharacters);
+
+    // DirectWrite warmup.
+    gBeforeSandboxSkFontMgr = SkFontMgr_New_DirectWrite();  // Leaked.

[scottmg, 2014/03/21 23:04:06]

Still working on simplifying this; we can call the DWrite APIs directly and make
this simpler, I think.

+
+    SkTypeface* typeface = gBeforeSandboxSkFontMgr->legacyCreateTypeface("Arial", 0);
+
+    SkPaint paint_warmup;
+    paint_warmup.setTextSize(12);
+    paint_warmup.setTypeface(typeface);
+    paint_warmup.setFakeBoldText(false);
+    paint_warmup.setTextSkewX(0);
+    paint_warmup.setSubpixelText(true);
+    static const uint32_t textFlagsMask = SkPaint::kAntiAlias_Flag |
+        SkPaint::kLCDRenderText_Flag |
+        SkPaint::kGenA8FromLCD_Flag;
+    paint_warmup.setFlags(textFlagsMask);
+    wchar_t glyph = 91;
+    paint_warmup.measureText(&glyph, 2);
   }
 }
 
 void RendererMainPlatformDelegate::PlatformUninitialize() {
 }
 
 bool RendererMainPlatformDelegate::InitSandboxTests(bool no_sandbox) {
   const CommandLine& command_line = parameters_.command_line;
 
   DVLOG(1) << "Started renderer with " << command_line.GetCommandLineString();
@@ skipping 42 matching lines @@
     if (run_security_tests) {
       int test_count = 0;
       DVLOG(1) << "Running renderer security tests";
       BOOL result = run_security_tests(&test_count);
       CHECK(result) << "Test number " << test_count << " has failed.";
     }
   }
 }
 
 }  // namespace content