Move <webview> API to chrome layer

chrome/common/chrome_browser_plugin_messages.h

Index: chrome/common/chrome_browser_plugin_messages.h
diff --git a/chrome/common/chrome_browser_plugin_messages.h b/chrome/common/chrome_browser_plugin_messages.h
new file mode 100644
index 0000000000000000000000000000000000000000..5a5222100b2af293fd4a258ab2bb915f6d0c1a7b
--- /dev/null
+++ b/chrome/common/chrome_browser_plugin_messages.h
@@ -0,0 +1,31 @@
+// Copyright (c) 2012 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 message header, no traditional include guard.
+
+#include "base/values.h"
+#include "ipc/ipc_message_macros.h"
+
+#define IPC_MESSAGE_START ChromeBrowserPluginMsgStart
+
+// Browser plugin messages
+
+// -----------------------------------------------------------------------------
+// These messages are from the embedder to the browser process.
+
+// Tells the guest to navigate to an entry |relative_index| away from the
+// current navigation entry.
+IPC_MESSAGE_ROUTED1(ChromeBrowserPluginHostMsg_Go,
+                    int /* relative_index */)
+
+// Tell the guest to stop loading.
+IPC_MESSAGE_ROUTED0(ChromeBrowserPluginHostMsg_Stop)
+
+// Tell the guest to reload.
+IPC_MESSAGE_ROUTED0(ChromeBrowserPluginHostMsg_Reload)
+
+// -----------------------------------------------------------------------------
+
+// These messages are from the browser process to the embedder.
+