Added GDI font emulation support for Flash.

content/ppapi_plugin/ppapi_thread.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/ppapi_plugin/ppapi_thread.h"
 
 #include <limits>
 
 #include "base/command_line.h"
 #include "base/cpu.h"
@@ skipping 33 matching lines @@
 #include "ppapi/proxy/plugin_globals.h"
 #include "ppapi/proxy/plugin_message_filter.h"
 #include "ppapi/proxy/ppapi_messages.h"
 #include "ppapi/proxy/resource_reply_thread_registrar.h"
 #include "third_party/WebKit/public/web/WebKit.h"
 #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/public/common/render_font_warmup_win.h"
 #include "sandbox/win/src/sandbox.h"
 #elif defined(OS_MACOSX)
 #include "content/common/sandbox_init_mac.h"
 #endif
 
 #if defined(OS_WIN)
 const char kWidevineCdmAdapterFileName[] = "widevinecdmadapter.dll";
 
 extern sandbox::TargetServices* g_target_services;
 
@@ skipping 354 matching lines @@
         }
       }
     }
 
     // Cause advapi32 to load before the sandbox is turned on.
     unsigned int dummy_rand;
     rand_s(&dummy_rand);
 
     WarmupWindowsLocales(permissions);
 
+    // If Win32k lockdown is on and loading Flash then we need to patch
+    // its GDI font enumeration code.

[palmer, 2015/09/11 22:34:16]

Nit: The code is admirably clear, so I don't think this comment is strictly
necessary.

+    if (IsWin32kLockdownEnabled() &&
+        permissions.HasPermission(ppapi::PERMISSION_FLASH)) {
+      PatchGdiFontEnumeration(path);
+    }
+
     g_target_services->LowerToken();
   }
 #endif
 
   if (is_broker_) {
     // Get the InitializeBroker function (required).
     InitializeBrokerFunc init_broker =
         reinterpret_cast<InitializeBrokerFunc>(
             library.GetFunctionPointer("PPP_InitializeBroker"));
     if (!init_broker) {
@@ skipping 185 matching lines @@
           GetHistogramName(is_broker_, "LoadTime", path),
           base::TimeDelta::FromMilliseconds(1),
           base::TimeDelta::FromSeconds(10),
           50,
           base::HistogramBase::kUmaTargetedHistogramFlag);
 
   histogram->AddTime(load_time);
 }
 
 }  // namespace content