Move MessagePort implementation from android_webview to content

android_webview/common/aw_message_port_messages.h

Index: android_webview/common/aw_message_port_messages.h
diff --git a/android_webview/common/aw_message_port_messages.h b/android_webview/common/aw_message_port_messages.h
deleted file mode 100644
index 6b98023a45b0ef43be55c11a0c2471e97d608b07..0000000000000000000000000000000000000000
--- a/android_webview/common/aw_message_port_messages.h
+++ /dev/null
@@ -1,83 +0,0 @@
-// 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.
-
-// Multiply-included file, no traditional include guard.
-#include <vector>
-
-#include "ipc/ipc_message_macros.h"
-
-#define IPC_MESSAGE_START AwMessagePortMsgStart
-
-//-----------------------------------------------------------------------------
-// MessagePort messages
-// These are messages sent from the browser to the renderer process.
-
-// Normally the postmessages are exchanged between the renderers and the message
-// itself is opaque to the browser process. The format of the message is a
-// WebSerializesScriptValue.  A WebSerializedScriptValue is a blink structure
-// and can only be serialized/deserialized in renderer. Further, we could not
-// have Blink or V8 on the browser side due to their relience on static
-// variables.
-//
-// For posting messages from Java (Webview) to JS, we pass the browser/renderer
-// boundary an extra time and convert the messages to a type that browser can
-// use. Since WebView is single-process this is not terribly expensive, but
-// if we can do the conversion at the browser, then we can drop this code.
-
-// Important Note about multi-process situation: Webview is single process so
-// such a conversion does not increase the risk due to untrusted renderers.
-// However, in a multi-process scenario, the renderer that does the conversion
-// can be different then the renderer that receives the message. There are
-// 2 possible solutions to deal with this:
-// 1. Do the conversion at the browser side by writing a new serializer
-// deserializer for WebSerializedScriptValue
-// 2. Do the conversion at the content layer, at the renderer at the time of
-// receiveing the message. This may need adding new flags to indicate that
-// message needs to be converted. However, this is complicated due to queing
-// at the browser side and possibility of ports being shipped to a different
-// renderer or browser delegate.
-
-
-// Tells the renderer to convert the message from a WebSerializeScript
-// format to a base::ListValue. This IPC is used for messages that are
-// incoming to Android webview from JS.
-IPC_MESSAGE_ROUTED3(AwMessagePortMsg_WebToAppMessage,
-                    int /* recipient message port id */,
-                    base::string16 /* message */,
-                    std::vector<int> /* sent message port_ids */)
-
-// Tells the renderer to convert the message from a String16
-// format to a WebSerializedScriptValue. This IPC is used for messages that
-// are outgoing from Webview to JS.
-// TODO(sgurun) when we start supporting other types, use a ListValue instead
-// of string16
-IPC_MESSAGE_ROUTED3(AwMessagePortMsg_AppToWebMessage,
-                    int /* recipient message port id */,
-                    base::string16 /* message */,
-                    std::vector<int> /* sent message port_ids */)
-
-// Used to defer message port closing until after all in-flight messages
-// are flushed from renderer to browser. Renderer piggy-backs the message
-// to browser.
-IPC_MESSAGE_ROUTED1(AwMessagePortMsg_ClosePort,
-                    int /* message port id */)
-
-//-----------------------------------------------------------------------------
-// These are messages sent from the renderer to the browser process.
-
-// Response to AwMessagePortMessage_WebToAppMessage
-IPC_MESSAGE_ROUTED3(AwMessagePortHostMsg_ConvertedWebToAppMessage,
-                    int /* recipient message port id */,
-                    base::ListValue /* converted message */,
-                    std::vector<int> /* sent message port_ids */)
-
-// Response to AwMessagePortMessage_AppToWebMessage
-IPC_MESSAGE_ROUTED3(AwMessagePortHostMsg_ConvertedAppToWebMessage,
-                    int /* recipient message port id */,
-                    base::string16 /* converted message */,
-                    std::vector<int> /* sent message port_ids */)
-
-// Response to AwMessagePortMsg_ClosePort
-IPC_MESSAGE_ROUTED1(AwMessagePortHostMsg_ClosePortAck,
-                    int /* message port id */)