content/public/child/child_thread.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_PUBLIC_CHILD_CHILD_THREAD_H_
   6 #define CONTENT_PUBLIC_CHILD_CHILD_THREAD_H_
   7
   8 #include "content/common/content_export.h"
   9 #include "ipc/ipc_sender.h"
  10
  11 #if defined(OS_WIN)
  12 #include <windows.h>
  13 #endif
  14
  15 namespace content {
  16
  17 // An abstract base class that contains logic shared between most child
  18 // processes of the embedder.
  19 class CONTENT_EXPORT ChildThread : public IPC::Sender {
  20  public:
  21   // Returns the one child thread for this process.  Note that this can only be
  22   // accessed when running on the child thread itself.
  23   static ChildThread* Get();
  24
  25   ~ChildThread() override {}
  26
  27 #if defined(OS_WIN)
  28   // Request that the given font be loaded by the browser so it's cached by the
  29   // OS. Please see ChildProcessHost::PreCacheFont for details.
  30   virtual void PreCacheFont(const LOGFONT& log_font) = 0;
  31
  32   // Release cached font.
  33   virtual void ReleaseCachedFonts() = 0;
  34 #endif
  35 };
  36
  37 }  // namespace content
  38
  39 #endif  // CONTENT_PUBLIC_CHILD_CHILD_THREAD_H_