Revert of Registration of DevTools bridge in GCD.

components/devtools_bridge/android/java/src/org/chromium/components/devtools_bridge/gcd/MessageReader.java

Index: components/devtools_bridge/android/java/src/org/chromium/components/devtools_bridge/gcd/MessageReader.java
diff --git a/components/devtools_bridge/android/java/src/org/chromium/components/devtools_bridge/gcd/MessageReader.java b/components/devtools_bridge/android/java/src/org/chromium/components/devtools_bridge/gcd/MessageReader.java
deleted file mode 100644
index 382979dbe0a1e5770943ffa2450d144a355feb77..0000000000000000000000000000000000000000
--- a/components/devtools_bridge/android/java/src/org/chromium/components/devtools_bridge/gcd/MessageReader.java
+++ /dev/null
@@ -1,84 +0,0 @@
-// Copyright 2014 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.
-
-package org.chromium.components.devtools_bridge.gcd;
-
-import android.util.JsonReader;
-
-import java.io.IOException;
-
-/**
- * Helper class for parsing JSON-encoded GCD messages (HTTP responses and GCM notifications) used
- * in the DevTools bridge.
- */
-public final class MessageReader {
-    private final JsonReader mReader;
-
-    public MessageReader(JsonReader reader) {
-        mReader = reader;
-    }
-
-    /**
-     * Reads id from a registration ticket.
-     */
-    public String readTicketId() throws IOException {
-        return new TicketReader().readId();
-    }
-
-    /**
-     * Reads credentials from finalized registration ticket.
-     */
-    public InstanceCredential readInstanceCredential() throws IOException {
-        return new TicketReader().readCredential();
-    }
-
-    private abstract class ObjectReader {
-        public final void readObject() throws IOException {
-            mReader.beginObject();
-            while (mReader.hasNext()) {
-                readItem(mReader.nextName());
-            }
-            mReader.endObject();
-        }
-
-        protected void readItem(String name) throws IOException {
-            mReader.skipValue();
-        }
-    }
-
-    private class TicketReader extends ObjectReader {
-        private String mId;
-        private String mDeviceId;
-        private String mDeviceSecret;
-
-        public String readId() throws IOException {
-            readObject();
-            if (mId == null) {
-                throw new IllegalArgumentException();
-            }
-            return mId;
-        }
-
-        public InstanceCredential readCredential() throws IOException {
-            readObject();
-            if (mDeviceId == null || mDeviceSecret == null) {
-                throw new IllegalArgumentException();
-            }
-            return new InstanceCredential(mDeviceId, mDeviceSecret);
-        }
-
-        @Override
-        protected void readItem(String name) throws IOException {
-            if (name.equals("id")) {
-                mId = mReader.nextString();
-            } else if (name.equals("deviceId")) {
-                mDeviceId = mReader.nextString();
-            } else if (name.equals("robotAccountAuthorizationCode")) {
-                mDeviceSecret = mReader.nextString();
-            } else {
-                super.readItem(name);
-            }
-        }
-    }
-}