Refactor the keyboard events handling code related to RenderViewHostDelegate:...

chrome/common/render_messages_internal.h

 // Copyright (c) 2009 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.
 
 // This header is meant to be included in multiple passes, hence no traditional
 // header guard.
 // See ipc_message_macros.h for explanation of the macros and passes.
 
 #include <map>
 #include <string>
@@ skipping 133 matching lines @@
   // Tells the renderer to dump as much memory as it can, perhaps because we
   // have memory pressure or the renderer is (or will be) paged out.  This
   // should only result in purging objects we can recalculate, e.g. caches or
   // JS garbage, not in purging irreplaceable objects.
   IPC_MESSAGE_CONTROL0(ViewMsg_PurgeMemory)
 
   // Tells the render view that a ViewHostMsg_ScrollRect message was processed.
   // This signals the render view that it can send another ScrollRect message.
   IPC_MESSAGE_ROUTED0(ViewMsg_ScrollRect_ACK)
 
-  // Message payload is a blob that should be cast to WebInputEvent
+  // Message payload includes:
+  // 1. A blob that should be cast to WebInputEvent
+  // 2. An optional boolean value indicating if a RawKeyDown event is associated
+  //    to a keyboard shortcut of the browser.
   IPC_MESSAGE_ROUTED0(ViewMsg_HandleInputEvent)
 
   // This message notifies the renderer that the next key event is bound to one
   // or more pre-defined edit commands. If the next key event is not handled
   // by webkit, the specified edit commands shall be executed against current
   // focused frame.
   // Parameters
   // * edit_commands (see chrome/common/edit_command_types.h)
   //   Contains one or more edit commands.
   // See third_party/WebKit/WebCore/editing/EditorCommand.cpp for detailed
@@ skipping 1895 matching lines @@
                               string16 /* word */,
                               int /* document tag */,
                               bool /* correct */)
 
   IPC_SYNC_MESSAGE_CONTROL1_1(
       ViewHostMsg_SpellChecker_PlatformFillSuggestionList,
       string16 /* word */,
       std::vector<string16> /* suggestions */)
 
 IPC_END_MESSAGES(ViewHost)