New implementation of font precache on Windows.

chrome/renderer/chrome_render_process_observer.cc

Index: chrome/renderer/chrome_render_process_observer.cc
diff --git a/chrome/renderer/chrome_render_process_observer.cc b/chrome/renderer/chrome_render_process_observer.cc
index 380213abcb8e9a0d67df5d2f27d421c1a7a860f8..ced55938d68462a1caaf51fc38e37afd650568d9 100644
--- a/chrome/renderer/chrome_render_process_observer.cc
+++ b/chrome/renderer/chrome_render_process_observer.cc
@@ -163,8 +163,11 @@ DWORD WINAPI GetFontDataPatch(HDC hdc,
     LOGFONT logfont;
     if (GetObject(font, sizeof(LOGFONT), &logfont)) {
       std::vector<char> font_data;
-      if (RenderThread::current()->Send(new ViewHostMsg_PreCacheFont(logfont)))
+      if (RenderThread::current()->Send(
+          new ViewHostMsg_PreCacheFont(logfont, GetCurrentProcessId())))
         rv = GetFontData(hdc, table, offset, buffer, length);
+        RenderThread::current()->Send((
+          new ViewHostMsg_ReleaseCachedFont(GetCurrentProcessId())));
     }
   }
   return rv;