Support DirectWrite with sandbox on

content/renderer/renderer_main_platform_delegate_win.cc

Index: content/renderer/renderer_main_platform_delegate_win.cc
diff --git a/content/renderer/renderer_main_platform_delegate_win.cc b/content/renderer/renderer_main_platform_delegate_win.cc
index 58fce15cc41f4c4400a749c489c7a34fde5de828..c4b16941314b6622fd4ce3beee4bbd619d4d8425 100644
--- a/content/renderer/renderer_main_platform_delegate_win.cc
+++ b/content/renderer/renderer_main_platform_delegate_win.cc
@@ -17,6 +17,7 @@
 #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"
@@ -44,6 +45,8 @@ void SkiaPreCacheFontCharacters(const LOGFONT& logfont,
   }
 }
 
+SkFontMgr* gBeforeSandboxSkFontMgr;
+
 }  // namespace
 
 RendererMainPlatformDelegate::RendererMainPlatformDelegate(
@@ -78,6 +81,24 @@ void RendererMainPlatformDelegate::PlatformInitialize() {
     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);
   }
 }