Added network components for blimp text input feature

blimp/common/proto/ime.proto

+// Copyright 2016 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.
+//
+// Message definitions for text input messages.
+
+syntax = "proto2";
+
+option optimize_for = LITE_RUNTIME;
+
+package blimp;
+
+message ImeMessage {
+  // Text input type for IME which should be kept in sync with
+  // ui::TextInputType.
+  enum InputType {
+    TEXT = 1;
+    PASSWORD = 2;
+    SEARCH = 3;
+    EMAIL = 4;
+    NUMBER = 5;
+    TELEPHONE = 6;
+    URL = 7;
+    DATE = 8;
+    DATE_TIME = 9;
+    DATE_TIME_LOCAL = 10;
+    MONTH = 11;
+    TIME = 12;
+    WEEK = 13;
+    TEXT_AREA = 14;
+    CONTENT_EDITABLE = 15;
+    DATE_TIME_FIELD = 16;
+  }
+
+  enum Type {
+    UNKNOWN = 0;
+
+    // Server => Client types.
+    SHOW_IME = 1;
+    HIDE_IME = 2;
+
+    // Client => Server types.
+    SET_TEXT = 3;
+  }
+
+  optional int32 render_widget_id = 1;
+  optional Type type = 2;

[Wez, 2016/03/22 21:43:38]

See comments in ImeFeature re explicitly checking for presence of fields, OR
explicitly specifying default values (e.g. type defaults to UNKNOWN) to make the
intended behaviour clear.

[shaktisahu, 2016/03/22 23:45:43]

Done.

+  optional InputType text_input_type = 3;
+  optional string ime_text = 4;
+}