New implementation of font precache on Windows.

chrome/utility/chrome_content_utility_client.cc

 // Copyright (c) 2011 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 "chrome/utility/chrome_content_utility_client.h"
 
 #include "base/base64.h"
 #include "base/command_line.h"
 #include "base/json/json_reader.h"
 #include "chrome/common/chrome_paths.h"
@@ skipping 205 matching lines @@
 DWORD WINAPI UtilityProcess_GetFontDataPatch(
     HDC hdc, DWORD table, DWORD offset, LPVOID buffer, DWORD length) {
   int rv = GetFontData(hdc, table, offset, buffer, length);
   if (rv == GDI_ERROR && hdc) {
     HFONT font = static_cast<HFONT>(GetCurrentObject(hdc, OBJ_FONT));
 
     LOGFONT logfont;
     if (GetObject(font, sizeof(LOGFONT), &logfont)) {
       std::vector<char> font_data;
       if (UtilityThread::current()->Send(
-              new ChromeUtilityHostMsg_PreCacheFont(logfont)))
+              new ChromeUtilityHostMsg_PreCacheFont(logfont))) {
         rv = GetFontData(hdc, table, offset, buffer, length);
+        UtilityThread::current()->Send(
+            new ChromeUtilityHostMsg_ReleaseCachedFonts());
+      }
     }
   }
   return rv;
 }
 
 bool ChromeContentUtilityClient::RenderPDFToWinMetafile(
     base::PlatformFile pdf_file,
     const FilePath& metafile_path,
     const gfx::Rect& render_area,
     int render_dpi,
@@ skipping 108 matching lines @@
     Send(new ChromeUtilityHostMsg_GetPrinterCapsAndDefaults_Succeeded(
         printer_name, printer_info));
   } else {
     Send(new ChromeUtilityHostMsg_GetPrinterCapsAndDefaults_Failed(
         printer_name));
   }
   UtilityThread::current()->ReleaseProcessIfNeeded();
 }
 
 }  // namespace chrome