Add GetScreenBoundsRect to ui::AXPlatformNodeDelegate

ui/views/accessibility/native_view_accessibility_auralinux.cc

 // Copyright 2015 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 "ui/views/accessibility/native_view_accessibility_auralinux.h"
 
 #include <algorithm>
 #include <memory>
 #include <vector>
 
@@ skipping 77 matching lines @@
 
     Widget* widget = widgets_[index];
     CHECK(widget);
     return widget->GetRootView()->GetNativeViewAccessible();
   }
 
   gfx::Vector2d GetGlobalCoordinateOffset() override {
     return gfx::Vector2d();
   }
 
+  gfx::Rect GetScreenBoundsRect() const override {
+    NOTREACHED();
+    return gfx::Rect(0, 0, 0, 0);
+  }
+
   gfx::NativeViewAccessible HitTestSync(int x, int y) override {
     return nullptr;
   }
 
   gfx::NativeViewAccessible GetFocus() override {
     return nullptr;
   }
 
   gfx::AcceleratedWidget GetTargetForNativeAccessibilityEvent() override {
     return gfx::kNullAcceleratedWidget;
@@ skipping 55 matching lines @@
 }
 
 gfx::NativeViewAccessible NativeViewAccessibilityAuraLinux::GetParent() {
   gfx::NativeViewAccessible parent = NativeViewAccessibilityBase::GetParent();
   if (!parent)
     parent = AuraLinuxApplication::GetInstance()->GetNativeViewAccessible();
   return parent;
 }
 
 }  // namespace views