Eliminate redundant IPC used for showing the Windows virtual keyboard

content/common/view_messages.h

 // 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.
 
 // IPC messages for page rendering.
 // Multiply-included message file, hence no include guard.
 
 #include "base/memory/shared_memory.h"
 #include "base/process/process.h"
 #include "base/strings/string16.h"
@@ skipping 1102 matching lines @@
 
 // Sent to update part of the view.  In response to this message, the host
 // generates a ViewMsg_UpdateRect_ACK message.
 IPC_MESSAGE_ROUTED1(ViewHostMsg_UpdateRect,
                     ViewHostMsg_UpdateRect_Params)
 
 IPC_MESSAGE_ROUTED0(ViewHostMsg_Focus)
 IPC_MESSAGE_ROUTED0(ViewHostMsg_Blur)
 
 // Message sent from renderer to the browser when focus changes inside the
-// webpage. The parameter says whether the newly focused element needs
-// keyboard input (true for textfields, text areas and content editable divs).
-IPC_MESSAGE_ROUTED1(ViewHostMsg_FocusedNodeChanged,
-    bool /* is_editable_node */)
+// webpage. The parameters say whether the newly focused element needs
+// keyboard input (true for textfields, text areas and content editable divs),
+// and which input event type triggered the change (WebInputEvent::Undefined if
+// the change was not caused by an input event).
+IPC_MESSAGE_ROUTED2(ViewHostMsg_FocusedNodeChanged,
+    bool /* is_editable_node */,
+    blink::WebInputEvent::Type /* causal_event_type */)
 
 IPC_MESSAGE_ROUTED1(ViewHostMsg_SetCursor, content::WebCursor)
 
 // Used to set a cookie. The cookie is set asynchronously, but will be
 // available to a subsequent ViewHostMsg_GetCookies request.
 IPC_MESSAGE_CONTROL4(ViewHostMsg_SetCookie,
                      int /* render_frame_id */,
                      GURL /* url */,
                      GURL /* first_party_for_cookies */,
                      std::string /* cookie */)
@@ skipping 382 matching lines @@
 
 // Sent by the renderer to the browser to start a vibration with the given
 // duration.
 IPC_MESSAGE_CONTROL1(ViewHostMsg_Vibrate,
                      int64 /* milliseconds */)
 
 // Sent by the renderer to the browser to cancel the currently running
 // vibration, if there is one.
 IPC_MESSAGE_CONTROL0(ViewHostMsg_CancelVibration)
 
-// Message sent from renderer to the browser when the element that is focused
-// has been touched. A bool is passed in this message which indicates if the
-// node is editable.
-IPC_MESSAGE_ROUTED1(ViewHostMsg_FocusedNodeTouched,
-                    bool /* editable */)
-
 // Message sent from the renderer to the browser when an HTML form has failed
 // validation constraints.
 IPC_MESSAGE_ROUTED3(ViewHostMsg_ShowValidationMessage,
                     gfx::Rect /* anchor rectangle in root view coordinate */,
                     base::string16 /* validation message */,
                     base::string16 /* supplemental text */)
 
 // Message sent from the renderer to the browser when a HTML form validation
 // message should be hidden from view.
 IPC_MESSAGE_ROUTED0(ViewHostMsg_HideValidationMessage)
@@ skipping 95 matching lines @@
 // Since the browser keeps handles to the allocated transport DIBs, this
 // message is sent to tell the browser that it may release them when the
 // renderer is finished with them.
 IPC_MESSAGE_CONTROL1(ViewHostMsg_FreeTransportDIB,
                      TransportDIB::Id /* DIB id */)
 #endif
 
 // Adding a new message? Stick to the sort order above: first platform
 // independent ViewMsg, then ifdefs for platform specific ViewMsg, then platform
 // independent ViewHostMsg, then ifdefs for platform specific ViewHostMsg.