Add setSelection function to automation API.

content/common/accessibility_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 accessibility.
 // Multiply-included message file, hence no include guard.
 
 #include "base/basictypes.h"
 #include "content/common/ax_content_node_data.h"
 #include "content/common/content_export.h"
@@ skipping 107 matching lines @@
                     gfx::Point /* new location */)
 
 // Relay a request from assistive technology to set the scroll offset
 // of an accessibility object that's a scroll container, to a specific
 // offset.
 IPC_MESSAGE_ROUTED2(AccessibilityMsg_SetScrollOffset,
                     int /* object id */,
                     gfx::Point /* new offset */)
 
 // Relay a request from assistive technology to set the cursor or
-// selection within an editable text element.
-IPC_MESSAGE_ROUTED3(AccessibilityMsg_SetTextSelection,
-                    int /* object id */,
-                    int /* New start offset */,
-                    int /* New end offset */)
+// selection within a document.
+IPC_MESSAGE_ROUTED4(AccessibilityMsg_SetSelection,
+                    int /* New anchor object id */,
+                    int /* New anchor offset */,
+                    int /* New focus object id */,
+                    int /* New focus offset */)
 
 // Relay a request from assistive technology to set the value of an
 // editable text element.
 IPC_MESSAGE_ROUTED2(AccessibilityMsg_SetValue,
                     int /* object id */,
                     base::string16 /* Value */)
 
 // Determine the accessibility object under a given point and reply with
 // a AccessibilityHostMsg_HitTestResult with the same id.
 IPC_MESSAGE_ROUTED1(AccessibilityMsg_HitTest,
@@ skipping 52 matching lines @@
 IPC_MESSAGE_ROUTED1(
     AccessibilityHostMsg_FindInPageResult,
     AccessibilityHostMsg_FindInPageResultParams)
 
 // Sent in response to AccessibilityMsg_SnapshotTree. The callback id that was
 // passed to the request will be returned in |callback_id|, along with
 // a standalone snapshot of the accessibility tree.
 IPC_MESSAGE_ROUTED2(AccessibilityHostMsg_SnapshotResponse,
                     int /* callback_id */,
                     ui::AXTreeUpdate<content::AXContentNodeData>)