Set up font precaching in ppapi process

Without this GetOutlineTextMetrics fails in
third_party/skia/src/ports/SkFontHost_win.cpp resulting in garbage
font data being returned to Flash.

R=brettw@chromium.org, cpu@chromium.org
TBR=piman@chromium.org
BUG=308632

Review URL: https://codereview.chromium.org/118083004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241916 0039d316-1c4b-4281-b951-d872f2087c98

content/ppapi_plugin/ppapi_plugin_main.cc

@@ -17,11 +17,13 @@
 #include "content/public/common/main_function_params.h"
 #include "content/public/plugin/content_plugin_client.h"
 #include "crypto/nss_util.h"
+#include "ppapi/proxy/plugin_globals.h"
 #include "ppapi/proxy/proxy_module.h"
 #include "ui/base/ui_base_switches.h"
 
 #if defined(OS_WIN)
 #include "sandbox/win/src/sandbox.h"
+#include "third_party/skia/include/ports/SkTypeface_win.h"
 #endif
 
 #if defined(OS_LINUX)
@@ -40,6 +42,18 @@ void* g_target_services = 0;
 
 namespace content {
 
+namespace {
+
+#if defined(OS_WIN)
+// Windows-only skia sandbox support
+void SkiaPreCacheFont(const LOGFONT& logfont) {
+  ppapi::proxy::PluginGlobals::Get()->PreCacheFontForFlash(
+      reinterpret_cast<const void*>(&logfont));
+}
+#endif
+
+}  // namespace
+
 // Main function for starting the PPAPI plugin process.
 int PpapiPluginMain(const MainFunctionParams& parameters) {
   const CommandLine& command_line = parameters.command_line;
@@ -105,6 +119,10 @@ int PpapiPluginMain(const MainFunctionParams& parameters) {
   ppapi_process.set_main_thread(
       new PpapiThread(parameters.command_line, false));  // Not a broker.
 
+#if defined(OS_WIN)
+  SkTypeface_SetEnsureLOGFONTAccessibleProc(SkiaPreCacheFont);
+#endif
+
   main_message_loop.Run();
   return 0;
 }