Add a new code/message path for moving an insertion handle

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/process.h"
 #include "base/shared_memory.h"
 #include "base/string16.h"
@@ skipping 905 matching lines @@
 IPC_MESSAGE_ROUTED1(ViewMsg_ReplaceDateTime, string16 /* text */)
 
 IPC_MESSAGE_ROUTED0(ViewMsg_Unselect)
 
 // Requests the renderer to select the region between two points.
 // Expects a SelectRange_ACK message when finished.
 IPC_MESSAGE_ROUTED2(ViewMsg_SelectRange,
                     gfx::Point /* start */,
                     gfx::Point /* end */)
 
+// Requests the renderer to move the caret selection toward the point.
+// Expects a MoveCaret_ACK message when finished.
+IPC_MESSAGE_ROUTED1(ViewMsg_MoveCaret,
+                    gfx::Point /* location */)
+
 // Copies the image at location x, y to the clipboard (if there indeed is an
 // image at that location).
 IPC_MESSAGE_ROUTED2(ViewMsg_CopyImageAt,
                     int /* x */,
                     int /* y */)
 
 // Tells the renderer to perform the given action on the media player
 // located at the given point.
 IPC_MESSAGE_ROUTED2(ViewMsg_MediaPlayerActionAt,
                     gfx::Point, /* location */
@@ skipping 993 matching lines @@
 IPC_SYNC_MESSAGE_ROUTED1_0(ViewHostMsg_DestroyPluginContainer,
                            gfx::PluginWindowHandle /* id */)
 #endif
 
 // Send the tooltip text for the current mouse position to the browser.
 IPC_MESSAGE_ROUTED2(ViewHostMsg_SetTooltipText,
                     string16 /* tooltip text string */,
                     WebKit::WebTextDirection /* text direction hint */)
 
 IPC_MESSAGE_ROUTED0(ViewHostMsg_SelectRange_ACK)
+IPC_MESSAGE_ROUTED0(ViewHostMsg_MoveCaret_ACK)
 
 // Notification that the text selection has changed.
 // Note: The secound parameter is the character based offset of the string16
 // text in the document.
 IPC_MESSAGE_ROUTED3(ViewHostMsg_SelectionChanged,
                     string16 /* text covers the selection range */,
                     size_t /* the offset of the text in the document */,
                     ui::Range /* selection range in the document */)
 
 // Notification that the selection bounds have changed.
@@ skipping 415 matching lines @@
                      int /* arb_robustness_status_code */)
 
 #if defined(OS_WIN)
 // Request that the given font characters be loaded by the browser so it's
 // cached by the OS. Please see RenderMessageFilter::OnPreCacheFontCharacters
 // for details.
 IPC_SYNC_MESSAGE_CONTROL2_0(ViewHostMsg_PreCacheFontCharacters,
                             LOGFONT /* font_data */,
                             string16 /* characters */)
 #endif