Add setSelection function to automation API.

chrome/browser/ui/aura/accessibility/automation_manager_aura.cc

 // Copyright 2014 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.
 
 #include "chrome/browser/ui/aura/accessibility/automation_manager_aura.h"
 
 #include <vector>
 
 #include "base/memory/singleton.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 83 matching lines @@
 void AutomationManagerAura::Focus(int32 id) {
   CHECK(enabled_);
   current_tree_->Focus(id);
 }
 
 void AutomationManagerAura::MakeVisible(int32 id) {
   CHECK(enabled_);
   current_tree_->MakeVisible(id);
 }
 
-void AutomationManagerAura::SetSelection(int32 id, int32 start, int32 end) {
+void AutomationManagerAura::SetSelection(int32 anchor_id,
+                                         int32 anchor_offset,
+                                         int32 focus_id,
+                                         int32 focus_offset) {
   CHECK(enabled_);
-  current_tree_->SetSelection(id, start, end);
+  if (anchor_id != focus_id)
+    return;

[David Tseng, 2015/09/23 17:57:41]

NOTREACHED here, right?

+  current_tree_->SetSelection(anchor_id, anchor_offset, focus_offset);
 }
 
 void AutomationManagerAura::ShowContextMenu(int32 id) {
   CHECK(enabled_);
   current_tree_->ShowContextMenu(id);
 }
 
 AutomationManagerAura::AutomationManagerAura()
     : enabled_(false), processing_events_(false) {}
 
@@ skipping 24 matching lines @@
 
   processing_events_ = false;
   auto pending_events_copy = pending_events_;
   pending_events_.clear();
   for (size_t i = 0; i < pending_events_copy.size(); ++i) {
     SendEvent(context,
               pending_events_copy[i].first,
               pending_events_copy[i].second);
   }
 }