chrome.displaySource custom bindings

extensions/renderer/display_source_custom_bindings.h

Index: extensions/renderer/display_source_custom_bindings.h
diff --git a/extensions/renderer/display_source_custom_bindings.h b/extensions/renderer/display_source_custom_bindings.h
new file mode 100644
index 0000000000000000000000000000000000000000..199f199b4663e968a780d31738b54c93f1c704b9
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+++ b/extensions/renderer/display_source_custom_bindings.h
@@ -0,0 +1,56 @@
+// Copyright 2015 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 EXTENSIONS_RENDERER_DISPLAY_SOURCE_CUSTOM_BINDINGS_H_
+#define EXTENSIONS_RENDERER_DISPLAY_SOURCE_CUSTOM_BINDINGS_H_
+
+#include "base/macros.h"
+#include "extensions/common/api/display_source.h"
+#include "extensions/renderer/api/display_source/display_source_session.h"
+#include "extensions/renderer/object_backed_native_handler.h"
+#include "v8/include/v8.h"
+
+namespace extensions {
+class ScriptContext;
+
+// Implements custom bindings for the displaySource API.
+class DisplaySourceCustomBindings : public ObjectBackedNativeHandler {
+ public:
+  explicit DisplaySourceCustomBindings(ScriptContext* context);
+
+  ~DisplaySourceCustomBindings() override;
+
+ private:
+  //  ObjectBackedNativeHandler override.
+  void Invalidate() override;
+
+  void StartSession(
+      const v8::FunctionCallbackInfo<v8::Value>& args);
+  void TerminateSession(
+      const v8::FunctionCallbackInfo<v8::Value>& args);
+
+  void DispatchSessionStarted(int sink_id) const;
+  void DispatchSessionTerminated(int sink_id) const;
+  void DispatchSessionError(int sink_id,
+                            DisplaySourceErrorType type,
+                            const std::string& message) const;
+
+  // DisplaySession callbacks.
+  void OnSessionStarted(int sink_id);
+  void OnSessionTerminated(int sink_id);
+  void OnSessionError(int sink_id,
+                      DisplaySourceErrorType type,
+                      const std::string& message);
+
+  DisplaySourceSession* GetDisplaySession(int sink_id) const;
+
+  std::map<int, scoped_ptr<DisplaySourceSession>> session_map_;
+  base::WeakPtrFactory<DisplaySourceCustomBindings> weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(DisplaySourceCustomBindings);
+};
+
+}  // extensions
+
+#endif  // EXTENSIONS_RENDERER_DISPLAY_SOURCE_CUSTOM_BINDINGS_H_