Implement skia sandbox callback

chrome/renderer/print_web_view_helper.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/renderer/print_web_view_helper.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 27 matching lines @@
 #include "webkit/glue/webpreferences.h"
 
 #if defined(OS_POSIX)
 #include "base/process_util.h"
 #endif
 
 #if defined(USE_SKIA)
 #include "skia/ext/vector_canvas.h"
 #include "skia/ext/vector_platform_device_skia.h"
 #include "third_party/skia/include/core/SkTypeface.h"
+#if defined (OS_WIN)
+#include "content/common/child_process_messages.h"
+#endif
 #elif defined(OS_MACOSX)
 #include <CoreGraphics/CGContext.h>
 
 #include "base/mac/scoped_cftyperef.h"
 #include "base/sys_string_conversions.h"
 #include "ui/gfx/scoped_cg_context_save_gstate_mac.h"
 #endif
 
 #if defined(OS_MACOSX)
 using base::mac::ScopedCFTypeRef;
@@ skipping 377 matching lines @@
 }
 
 PrintWebViewHelper::PrintWebViewHelper(content::RenderView* render_view)
     : content::RenderViewObserver(render_view),
       content::RenderViewObserverTracker<PrintWebViewHelper>(render_view),
       print_web_view_(NULL),
       is_preview_enabled_(switches::IsPrintPreviewEnabled()),
       is_print_ready_metafile_sent_(false),
       user_cancelled_scripted_print_count_(0),
       notify_browser_of_print_failure_(true) {
+#if defined(OS_WIN) && defined(USE_SKIA)
+  if (!g_SandboxSupport) {
+    g_SandboxSupport = this;
+  }
+#endif
 }
 
-PrintWebViewHelper::~PrintWebViewHelper() {}
+PrintWebViewHelper::~PrintWebViewHelper() {
+#if defined(OS_WIN) && defined(USE_SKIA)
+  if (g_SandboxSupport == this) {
+    g_SandboxSupport = NULL;
+  }
+#endif
+}
 
 // Prints |frame| which called window.print().
 void PrintWebViewHelper::PrintPage(WebKit::WebFrame* frame) {
   DCHECK(frame);
 
   // Allow Prerendering to cancel this print request if necessary.
   if (prerender::PrerenderHelper::IsPrerendering(render_view())) {
     Send(new ChromeViewHostMsg_CancelPrerenderForPrinting(routing_id()));
     return;
   }
@@ skipping 1104 matching lines @@
   DCHECK(IsRendering());
   return prep_frame_view_->GetPrintCanvasSize();
 }
 
 void PrintWebViewHelper::PrintPreviewContext::ClearContext() {
   prep_frame_view_.reset();
   metafile_.reset();
   pages_to_render_.clear();
   error_ = PREVIEW_ERROR_NONE;
 }
+
+#if defined(OS_WIN) && defined(USE_SKIA)
+void PrintWebViewHelper::EnsureFontLoad(LOGFONT logfont) {
+  // This is a synchronized IPC message, will block caller thread.
+  Send(new ChildProcessHostMsg_PreCacheFont(logfont));
+}
+#endif