Added directwrite warmup for PPAPI processes.

content/ppapi_plugin/ppapi_plugin_main.cc

Index: content/ppapi_plugin/ppapi_plugin_main.cc
diff --git a/content/ppapi_plugin/ppapi_plugin_main.cc b/content/ppapi_plugin/ppapi_plugin_main.cc
index b20bdd934ec7c8c252494e409ae833b47dc72f46..761ebf31ffd24c8012de51531278721a06f230dd 100644
--- a/content/ppapi_plugin/ppapi_plugin_main.cc
+++ b/content/ppapi_plugin/ppapi_plugin_main.cc
@@ -25,8 +25,18 @@
 #include "ui/base/ui_base_switches.h"
 
 #if defined(OS_WIN)
+#include "base/win/win_util.h"
+#include "base/win/windows_version.h"
+#include "content/common/render_font_warmup_win.h"
 #include "sandbox/win/src/sandbox.h"
+#include "skia/ext/fontmgr_default_win.h"
+#include "skia/ext/refptr.h"
+#include "third_party/WebKit/public/web/win/WebFontRendering.h"
+#include "third_party/skia/include/ports/SkFontMgr.h"
 #include "third_party/skia/include/ports/SkTypeface_win.h"
+#include "ui/gfx/hud_font.h"
+#include "ui/gfx/win/direct_write.h"
+#include "ui/gfx/win/dpi.h"
 #endif
 
 #if defined(OS_CHROMEOS)
@@ -57,6 +67,22 @@ void SkiaPreCacheFont(const LOGFONT& logfont) {
   ppapi::proxy::PluginGlobals::Get()->PreCacheFontForFlash(
       reinterpret_cast<const void*>(&logfont));
 }
+
+void WarmupDirectWrite() {
+  // The objects used here are intentionally not freed as we want the Skia
+  // code to use these objects after warmup.
+  SetDefaultSkiaFactory(GetPreSandboxWarmupFontMgr());
+
+  // We need to warm up *some* font for DirectWrite. We also need to pass one
+  // down for the CC HUD code, so use the same one here. Note that we don't use
+  // a monospace as would be nice in an attempt to avoid a small startup time
+  // regression, see http://crbug.com/463613.
+  skia::RefPtr<SkTypeface> hud_typeface = skia::AdoptRef(
+      GetPreSandboxWarmupFontMgr()->legacyCreateTypeface("Times New Roman", 0));
+  DoPreSandboxWarmupForTypeface(hud_typeface.get());
+  gfx::SetHudTypeface(hud_typeface);
+}
+
 #endif
 
 }  // namespace
@@ -135,7 +161,17 @@ int PpapiPluginMain(const MainFunctionParams& parameters) {
       new PpapiThread(parameters.command_line, false));  // Not a broker.
 
 #if defined(OS_WIN)
-  SkTypeface_SetEnsureLOGFONTAccessibleProc(SkiaPreCacheFont);
+  if (IsWin32kLockdownEnabled())
+    gfx::win::MaybeInitializeDirectWrite();
+  bool use_direct_write = gfx::win::IsDirectWriteEnabled();
+  if (use_direct_write) {
+    WarmupDirectWrite();
+  } else {
+    SkTypeface_SetEnsureLOGFONTAccessibleProc(SkiaPreCacheFont);
+  }
+
+  blink::WebFontRendering::setUseDirectWrite(use_direct_write);
+  blink::WebFontRendering::setDeviceScaleFactor(gfx::GetDPIScale());
 #endif
 
   main_message_loop.Run();