cc/layers/layer_client.h

   1 // Copyright 2013 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 CC_LAYERS_LAYER_CLIENT_H_
   6 #define CC_LAYERS_LAYER_CLIENT_H_
   7
   8 #include <string>
   9
  10 #include "base/memory/ref_counted.h"
  11 #include "cc/base/cc_export.h"
  12
  13 namespace base {
  14 namespace trace_event {
  15 class ConvertableToTraceFormat;
  16 }
  17
  18 // TODO(ssid): remove these aliases after the tracing clients are moved to the
  19 // new trace_event namespace. See crbug.com/451032. ETA: March 2015
  20 namespace debug {
  21 using ::base::trace_event::ConvertableToTraceFormat;
  22 }
  23 }  // namespace base
  24
  25 namespace cc {
  26
  27 class CC_EXPORT LayerClient {
  28  public:
  29   // Returns a pointer to a debug info object, if one has been computed.
  30   // If not, returns nullptr.
  31   // If the returned pointer is non-nullptr, the caller takes
  32   // ownership of the pointer.
  33   virtual scoped_refptr<base::debug::ConvertableToTraceFormat>
  34       TakeDebugInfo() = 0;
  35
  36  protected:
  37   virtual ~LayerClient() {}
  38 };
  39
  40 }  // namespace cc
  41
  42 #endif  // CC_LAYERS_LAYER_CLIENT_H_