Support tracking focused node element for OOPIFs.

content/common/frame_messages.h

 // Copyright 2013 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 interacting with frames.
 // Multiply-included message file, hence no include guard.
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 763 matching lines @@
 IPC_MESSAGE_ROUTED0(FrameMsg_WillEnterFullscreen)
 
 // Send to the RenderFrame to set text tracks state and style settings.
 // Sent for top-level frames.
 IPC_MESSAGE_ROUTED1(FrameMsg_SetTextTrackSettings,
                     FrameMsg_TextTrackSettings_Params /* params */)
 
 // Posts a message from a frame in another process to the current renderer.
 IPC_MESSAGE_ROUTED1(FrameMsg_PostMessageEvent, FrameMsg_PostMessage_Params)
 
+// Tells the RenderFrame to clear the focused element (if any).
+IPC_MESSAGE_ROUTED0(FrameMsg_ClearFocusedElement)
+
 #if defined(OS_ANDROID)
 // Request the distance to the nearest find result in a frame from the point at
 // (x, y), defined in fractions of the content document's width and height. The
 // distance will be returned via FrameHostMsg_GetNearestFindResult_Reply.  Note
 // that |nfr_request_id| is a completely seperate ID from the |request_id| used
 // in other find-related IPCs. It is specifically used to uniquely identify a
 // nearest find result request, rather than a find request.
 IPC_MESSAGE_ROUTED3(FrameMsg_GetNearestFindResult,
                     int /* nfr_request_id */,
                     float /* x */,
@@ skipping 318 matching lines @@
                             bool /* cookies_enabled */)
 
 // Sent by the renderer process to check whether client 3D APIs
 // (Pepper 3D, WebGL) are explicitly blocked.
 IPC_SYNC_MESSAGE_CONTROL3_1(FrameHostMsg_Are3DAPIsBlocked,
                             int /* render_frame_id */,
                             GURL /* top_origin_url */,
                             content::ThreeDAPIType /* requester */,
                             bool /* blocked */)
 
+// Message sent from renderer to the browser when focus changes inside the
+// frame. The first parameter says whether the newly focused element needs
+// keyboard input (true for textfields, text areas and content editable divs).
+// The second parameter is the node bounds relative to local root's
+// RenderWidgetHostView.
+IPC_MESSAGE_ROUTED2(FrameHostMsg_FocusedNodeChanged,
+                    bool /* is_editable_node */,
+                    gfx::Rect /* node_bounds */)
+
 #if defined(ENABLE_PLUGINS)
 // Notification sent from a renderer to the browser that a Pepper plugin
 // instance is created in the DOM.
 IPC_MESSAGE_ROUTED1(FrameHostMsg_PepperInstanceCreated,
                     int32_t /* pp_instance */)
 
 // Notification sent from a renderer to the browser that a Pepper plugin
 // instance is deleted from the DOM.
 IPC_MESSAGE_ROUTED1(FrameHostMsg_PepperInstanceDeleted,
                     int32_t /* pp_instance */)
@@ skipping 384 matching lines @@
 // nearest find result in the sending frame.
 IPC_MESSAGE_ROUTED2(FrameHostMsg_GetNearestFindResult_Reply,
                     int /* nfr_request_id */,
                     float /* distance */)
 #endif
 
 // Adding a new message? Stick to the sort order above: first platform
 // independent FrameMsg, then ifdefs for platform specific FrameMsg, then
 // platform independent FrameHostMsg, then ifdefs for platform specific
 // FrameHostMsg.