Introduce ChannelMojo

ipc/ipc_channel_reader.cc

Index: ipc/ipc_channel_reader.cc
diff --git a/ipc/ipc_channel_reader.cc b/ipc/ipc_channel_reader.cc
index 9a3cc3c50bbeea3fa05dbb3d066858c4240f2e01..28a889a41c55291bcb65faceb99bd0212778838b 100644
--- a/ipc/ipc_channel_reader.cc
+++ b/ipc/ipc_channel_reader.cc
@@ -38,13 +38,13 @@ bool ChannelReader::AsyncReadComplete(int bytes_read) {
   return DispatchInputData(input_buf_, bytes_read);
 }
 
-bool ChannelReader::IsInternalMessage(const Message& m) const {
+bool ChannelReader::IsInternalMessage(const Message& m) {
   return m.routing_id() == MSG_ROUTING_NONE &&
       m.type() >= Channel::CLOSE_FD_MESSAGE_TYPE &&
       m.type() <= Channel::HELLO_MESSAGE_TYPE;
 }
 
-bool ChannelReader::IsHelloMessage(const Message& m) const {
+bool ChannelReader::IsHelloMessage(const Message& m) {
   return m.routing_id() == MSG_ROUTING_NONE &&
       m.type() == Channel::HELLO_MESSAGE_TYPE;
 }