Make BrowserAccessibility implement AXPlatformNodeDelegete.

content/browser/accessibility/browser_accessibility.cc

Index: content/browser/accessibility/browser_accessibility.cc
diff --git a/content/browser/accessibility/browser_accessibility.cc b/content/browser/accessibility/browser_accessibility.cc
index d8d794993e51543cfd8575f6b56c611326a40edc..8141dd2f8616e52ed29ceb53119739f15f296b4a 100644
--- a/content/browser/accessibility/browser_accessibility.cc
+++ b/content/browser/accessibility/browser_accessibility.cc
@@ -1230,4 +1230,62 @@ gfx::Rect BrowserAccessibility::RelativeToAbsoluteBounds(
   return gfx::ToEnclosingRect(bounds);
 }
 
+// AXPlatformNodeDelegate.
+const ui::AXNodeData& BrowserAccessibility::GetData() {
+  CR_DEFINE_STATIC_LOCAL(ui::AXNodeData, empty_data, ());
+  NOTREACHED();
+  return empty_data;
+}
+
+gfx::NativeWindow BrowserAccessibility::GetTopLevelWidget() {
+  NOTREACHED();
+  return nullptr;
+}
+
+gfx::NativeViewAccessible BrowserAccessibility::GetParent() {
+  NOTREACHED();
+  return nullptr;
+}
+
+int BrowserAccessibility::GetChildCount() {
+  NOTREACHED();
+  return -1;
+}
+
+gfx::NativeViewAccessible BrowserAccessibility::ChildAtIndex(int index) {
+  NOTREACHED();
+  return nullptr;
+}
+
+gfx::Vector2d BrowserAccessibility::GetGlobalCoordinateOffset() {
+  NOTREACHED();
+  return gfx::Vector2d();
+}
+
+gfx::NativeViewAccessible BrowserAccessibility::HitTestSync(int x, int y) {
+  NOTREACHED();
+  return nullptr;
+}
+
+gfx::NativeViewAccessible BrowserAccessibility::GetFocus() {
+  NOTREACHED();
+  return nullptr;
+}
+
+gfx::AcceleratedWidget
+BrowserAccessibility::GetTargetForNativeAccessibilityEvent() {
+  NOTREACHED();
+  return gfx::kNullAcceleratedWidget;
+}
+
+bool BrowserAccessibility::AccessibilityPerformAction(
+    const ui::AXActionData& data) {
+  NOTREACHED();
+  return false;
+}
+
+void BrowserAccessibility::DoDefaultAction() {
+  NOTREACHED();
+}
+
 }  // namespace content