Serialize a subset of WebInputEvents to protobufs.

blimp/net/input_message_generator.h

Index: blimp/net/input_message_generator.h
diff --git a/blimp/net/input_message_generator.h b/blimp/net/input_message_generator.h
new file mode 100644
index 0000000000000000000000000000000000000000..d92e83cc3ea2ef5b7370afb24d22e4219f220d20
--- /dev/null
+++ b/blimp/net/input_message_generator.h
@@ -0,0 +1,43 @@
+// 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 BLIMP_NET_INPUT_MESSAGE_GENERATOR_H_
+#define BLIMP_NET_INPUT_MESSAGE_GENERATOR_H_
+
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+#include "blimp/net/blimp_net_export.h"
+#include "net/base/completion_callback.h"
+
+namespace blink {
+class WebInputEvent;
+}
+
+namespace blimp {
+
+class BlimpMessage;
+class BlimpMessageProcessor;
+
+// Handles creating serialized InputMessage protos from a stream of
+// WebInputEvents.  This class may be stateful to optimize the size of the
+// serialized transmission data.  See InputMessageProcessor for the deserialize
+// code.
+class BLIMP_NET_EXPORT InputMessageGenerator {
+ public:
+  InputMessageGenerator();
+  ~InputMessageGenerator();
+
+  // Builds a BlimpMessage from |event| that has the basic input event fields
+  // populated.  It is up to the caller to populate the rest of the required
+  // fields and to send the BlimpMessage.  This might make use of state sent
+  // from previous messages.

[Wez, 2015/11/25 23:52:02]

nit: You want the "This might make use..." to follow on from the "basic input
event fields populated." - as written it sounds like populating "the rest of the
required fields..." makes use of state from previous messages.

[David Trainor- moved to gerrit, 2015/11/30 04:29:26]

Done.

+  scoped_ptr<BlimpMessage> GenerateMessage(const blink::WebInputEvent& event);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(InputMessageGenerator);
+};
+
+}  // namespace blimp
+
+#endif  // BLIMP_NET_INPUT_MESSAGE_GENERATOR_H_