add voice interaction shortcut.

components/arc/common/voice_interaction.mojom

Index: components/arc/common/voice_interaction.mojom
diff --git a/components/arc/common/voice_interaction.mojom b/components/arc/common/voice_interaction.mojom
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index 0000000000000000000000000000000000000000..0d6656ebabd8a932ed2883acb036680f81888e24
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+// 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.
+//
+// Next MinVersion: 1
+
+module arc.mojom;
+
+// Represents view structure to be passed to ARC.
+struct VoiceInteractionStructure {

[xc, 2017/03/09 05:05:47]

still needs some more documentation on the fields.

[Muyuan, 2017/03/09 20:44:44]

Done.

+  // whether this is a valid response
+  bool success;
+
+  // geometry of the view element

[xc, 2017/03/09 05:05:47]

what is a view element?

[Muyuan, 2017/03/09 20:44:44]

Done.

+  int32 x;
+  int32 y;
+  int32 width;

[xc, 2017/03/09 05:05:47]

dp or pixel?

[Muyuan, 2017/03/09 20:44:45]

Done.

+  int32 height;
+
+  // text properties

[xc, 2017/03/09 05:05:47]

what is text properties?

[Muyuan, 2017/03/09 20:44:45]

Done.

+  float text_size;
+  array<uint8> text;

[xc, 2017/03/09 05:05:47]

what's the encoding of text?

[Muyuan, 2017/03/09 20:44:44]

Done.

+  int32 color;

[xc, 2017/03/09 05:05:47]

what's the format of color, rgba or argb what not?

[Muyuan, 2017/03/09 20:44:44]

Done.

+  int32 bgcolor;
+  bool bold;
+  bool italic;
+  bool underline;
+  bool line_through;
+
+  // properties of the text selection
+  bool has_selection;
+  int32 start_selection;
+  int32 end_selection;

[xc, 2017/03/09 05:05:47]

is start/end inclusive or not?

[Muyuan, 2017/03/09 20:44:45]

Done.

+
+  // fake Android view class name of the element

[xc, 2017/03/09 05:05:47]

what do we need this?

[Muyuan, 2017/03/09 20:44:45]

Done.

+  string class_name;
+
+  array<VoiceInteractionStructure> children;

[xc, 2017/03/09 05:05:47]

what is children?

[Muyuan, 2017/03/09 20:44:44]

Done.

+};
+
+// Handles voice interaction queries from Android.
+// Next method ID: 2
+interface VoiceInteractionHost {
+  CaptureFocusedWindow@0() => (array<uint8> png_data);
+  GetVoiceInteractionStructure@1() => (VoiceInteractionStructure structure);
+};
+
+// Connects with Android system server.
+// Next method ID:2
+interface VoiceInteractionCaptureInstance {
+  Init@0(VoiceInteractionHost host_ptr);
+  StartVoiceInteractionSession@1();
+};
+
+// Connects with ArcHome.
+// Next method ID: 1
+interface VoiceInteractionArcHomeInstance {
+  Init@0(VoiceInteractionHost host_ptr);
+};
+
+