Accessible bounds should include device scale factor on Windows.

content/browser/accessibility/browser_accessibility_win.cc

 // 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.
 
 #include "content/browser/accessibility/browser_accessibility_win.h"
 
 #include <UIAutomationClient.h>
 #include <UIAutomationCoreApi.h>
 
 #include <algorithm>
@@ skipping 4234 matching lines @@
 }
 
 bool BrowserAccessibilityWin::IsNative() const {
   return true;
 }
 
 void BrowserAccessibilityWin::OnLocationChanged() {
   FireNativeEvent(EVENT_OBJECT_LOCATIONCHANGE);
 }
 
+gfx::Rect BrowserAccessibilityWin::RelativeToAbsoluteBounds(
+    gfx::RectF bounds,
+    bool frame_only) const {
+  gfx::Rect result =
+      BrowserAccessibility::RelativeToAbsoluteBounds(bounds, frame_only);
+
+  // On Windows, we have to divide by the device scale factor to get
+  // pixels in the coordinates that MSAA clients expect.
+  float device_scale_factor = manager()->device_scale_factor();
+  if (device_scale_factor > 0.0 && device_scale_factor != 1.0) {
+    result = ScaleToEnclosingRect(result, 1.0 / device_scale_factor,
+                                  1.0 / device_scale_factor);
+  }
+  return result;
+}
+
 std::vector<base::string16> BrowserAccessibilityWin::ComputeTextAttributes()
     const {
   std::vector<base::string16> attributes;
 
   // We include list markers for now, but there might be other objects that are
   // auto generated.
   // TODO(nektar): Compute what objects are auto-generated in Blink.
   if (GetRole() == ui::AX_ROLE_LIST_MARKER)
     attributes.push_back(L"auto-generated:true");
   else
@@ skipping 1526 matching lines @@
   return static_cast<BrowserAccessibilityWin*>(obj);
 }
 
 const BrowserAccessibilityWin*
 ToBrowserAccessibilityWin(const BrowserAccessibility* obj) {
   DCHECK(!obj || obj->IsNative());
   return static_cast<const BrowserAccessibilityWin*>(obj);
 }
 
 }  // namespace content