Cast channel: Add cast.channel.getLogs extension API.

extensions/browser/api/cast_channel/cast_channel_api.h

Index: extensions/browser/api/cast_channel/cast_channel_api.h
diff --git a/extensions/browser/api/cast_channel/cast_channel_api.h b/extensions/browser/api/cast_channel/cast_channel_api.h
index 4abeff3600f0304d40fc243529b82d5c083c9961..0055d3ede5bc4bfdac749e2db84be6254402320a 100644
--- a/extensions/browser/api/cast_channel/cast_channel_api.h
+++ b/extensions/browser/api/cast_channel/cast_channel_api.h
@@ -219,6 +219,28 @@ class CastChannelCloseFunction : public CastChannelAsyncApiFunction {
   DISALLOW_COPY_AND_ASSIGN(CastChannelCloseFunction);
 };
 
+class CastChannelGetLogsFunction : public CastChannelAsyncApiFunction {
+ public:
+  CastChannelGetLogsFunction();
+
+ protected:
+  virtual ~CastChannelGetLogsFunction();
+
+  // AsyncApiFunction:
+  virtual bool PrePrepare() OVERRIDE;
+  virtual bool Prepare() OVERRIDE;
+  virtual void AsyncWorkStart() OVERRIDE;
+
+ private:
+  DECLARE_EXTENSION_FUNCTION("cast.channel.getLogs", CAST_CHANNEL_GETLOGS)
+
+  void OnClose(int result);
+
+  CastChannelAPI* api_;
+
+  DISALLOW_COPY_AND_ASSIGN(CastChannelGetLogsFunction);
+};
+
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_CAST_CHANNEL_CAST_CHANNEL_API_H_