Send voice interaction structure from cros to Arc.

content/public/browser/voice_interaction_helper.h

+// Copyright 2017 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.
+
+#ifndef CONTENT_PUBLIC_BROWSER_VOICE_INTERACTION_HELPER_H_
+#define CONTENT_PUBLIC_BROWSER_VOICE_INTERACTION_HELPER_H_
+
+#include <stdint.h>
+
+#include <memory>
+#include <vector>
+
+#include "base/callback.h"
+#include "base/strings/string16.h"
+#include "ui/gfx/geometry/rect.h"
+
+namespace content {
+
+class WebContents;
+
+// An intermediate representation of the Accessibility snapshot
+// for voice interaction. The field names are kept consistent
+// with AccessibilitySnapshotNode.java.
+struct AXViewStructure {
+  gfx::Rect rect;
+  base::string16 text;
+  float text_size;
+  int32_t color;
+  int32_t bgcolor;
+  bool bold;
+  bool italic;
+  bool underline;
+  bool line_through;
+
+  bool has_selection;
+  int32_t start_selection;
+  int32_t end_selection;
+
+  std::string class_name;
+  std::vector<std::unique_ptr<AXViewStructure>> children;
+
+  AXViewStructure();

[Luis Héctor Chávez, 2017/04/03 23:24:12]

Do you need the explicit ctor/dtor?

[Muyuan, 2017/04/04 00:39:39]

Yes.. otherwise the CQ dry run just fails with "Complex class/struct needs an
explicit out-of-line constructor"

+  ~AXViewStructure();
+  DISALLOW_COPY_AND_ASSIGN(AXViewStructure);

[Luis Héctor Chávez, 2017/04/03 23:24:12]

nit: make this private.

[Muyuan, 2017/04/04 00:39:39]

Done.

+};
+
+void GetAXViewStructure(
+    WebContents* web_contents,
+    const base::Callback<void(std::unique_ptr<AXViewStructure>)>& callback);
+
+}  // namespace android
+
+#endif  // CONTENT_PUBLIC_BROWSER_ANDROID_VOICE_INTERACTION_HELPER_H_