Implement accessibility support for CSS-transformed iframes.

content/browser/accessibility/browser_accessibility_manager_unittest.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 <stddef.h>
 #include <stdint.h>
 
 #include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
 #include "build/build_config.h"
@@ skipping 70 matching lines @@
                                  int acc_focus_obj_id,
                                  int end_offset) override {}
   void AccessibilitySetValue(int acc_obj_id, const base::string16& value)
       override {}
   bool AccessibilityViewHasFocus() const override { return false; }
   gfx::Rect AccessibilityGetViewBounds() const override { return gfx::Rect(); }
   gfx::Point AccessibilityOriginInScreen(
       const gfx::Rect& bounds) const override {
     return gfx::Point();
   }
+  void AccessibilityTransformToRootCoordSpace(gfx::Rect* bounds) override {}
   void AccessibilityHitTest(const gfx::Point& point) override {}
   void AccessibilitySetAccessibilityFocus(int acc_obj_id) override {}
   void AccessibilityFatalError() override { got_fatal_error_ = true; }
   gfx::AcceleratedWidget AccessibilityGetAcceleratedWidget() override {
     return gfx::kNullAcceleratedWidget;
   }
   gfx::NativeViewAccessible AccessibilityGetNativeViewAccessible() override {
     return nullptr;
   }
 
@@ skipping 1375 matching lines @@
   events2[0].event_type = ui::AX_EVENT_NONE;
   manager->OnAccessibilityEvents(events2);
 
   // Make sure that the focused node was updated to the new root and
   // that this doesn't crash.
   ASSERT_EQ(3, manager->GetRoot()->GetId());
   ASSERT_EQ(3, manager->GetFocus()->GetId());
 }
 
 }  // namespace content