Add PDF compositor service

content/public/utility/utility_thread.h

 // Copyright (c) 2012 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.
 
 #ifndef CONTENT_PUBLIC_UTILITY_UTILITY_THREAD_H_
 #define CONTENT_PUBLIC_UTILITY_UTILITY_THREAD_H_
 
 #include "content/public/child/child_thread.h"
 
 namespace content {
 
 class CONTENT_EXPORT UtilityThread : virtual public ChildThread {
  public:
   // Returns the one utility thread for this process.  Note that this can only
   // be accessed when running on the utility thread itself.
   static UtilityThread* Get();
 
   UtilityThread();
   ~UtilityThread() override;
 
   // Releases the process if we are not (or no longer) in batch mode.
   virtual void ReleaseProcessIfNeeded() = 0;
 
   // Initializes blink if it hasn't already been initialized.
   virtual void EnsureBlinkInitialized() = 0;
+
+  // Set up resources for Skia to use.
+  virtual void EnsureReadyForSkia() = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_UTILITY_UTILITY_THREAD_H_