Revert https://codereview.chromium.org/1291903002 (protobuf roll).

third_party/protobuf/javanano/src/main/java/com/google/protobuf/nano/FieldData.java

Index: third_party/protobuf/javanano/src/main/java/com/google/protobuf/nano/FieldData.java
diff --git a/third_party/protobuf/javanano/src/main/java/com/google/protobuf/nano/FieldData.java b/third_party/protobuf/javanano/src/main/java/com/google/protobuf/nano/FieldData.java
deleted file mode 100644
index ebebabc8e5c1902ef7da202f7182efcd339ab7cb..0000000000000000000000000000000000000000
--- a/third_party/protobuf/javanano/src/main/java/com/google/protobuf/nano/FieldData.java
+++ /dev/null
@@ -1,240 +0,0 @@
-// Protocol Buffers - Google's data interchange format
-// Copyright 2014 Google Inc.  All rights reserved.
-// https://developers.google.com/protocol-buffers/
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-package com.google.protobuf.nano;
-
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.List;
-
-/**
- * Stores unknown fields. These might be extensions or fields that the generated API doesn't
- * know about yet.
- */
-class FieldData implements Cloneable {
-    private Extension<?, ?> cachedExtension;
-    private Object value;
-    /** The serialised values for this object. Will be cleared if getValue is called */
-    private List<UnknownFieldData> unknownFieldData;
-
-    <T> FieldData(Extension<?, T> extension, T newValue) {
-        cachedExtension = extension;
-        value = newValue;
-    }
-
-    FieldData() {
-        unknownFieldData = new ArrayList<UnknownFieldData>();
-    }
-
-    void addUnknownField(UnknownFieldData unknownField) {
-        unknownFieldData.add(unknownField);
-    }
-
-    UnknownFieldData getUnknownField(int index) {
-        if (unknownFieldData == null) {
-            return null;
-        }
-        if (index < unknownFieldData.size()) {
-            return unknownFieldData.get(index);
-        }
-        return null;
-    }
-
-    int getUnknownFieldSize() {
-        if (unknownFieldData == null) {
-            return 0;
-        }
-        return unknownFieldData.size();
-    }
-
-    <T> T getValue(Extension<?, T> extension) {
-        if (value != null){
-            if (cachedExtension != extension) {  // Extension objects are singletons.
-                throw new IllegalStateException(
-                        "Tried to getExtension with a differernt Extension.");
-            }
-        } else {
-            cachedExtension = extension;
-            value = extension.getValueFrom(unknownFieldData);
-            unknownFieldData = null;
-        }
-        return (T) value;
-    }
-
-    <T> void setValue(Extension<?, T> extension, T newValue) {
-        cachedExtension = extension;
-        value = newValue;
-        unknownFieldData = null;
-    }
-
-    int computeSerializedSize() {
-        int size = 0;
-        if (value != null) {
-            size = cachedExtension.computeSerializedSize(value);
-        } else {
-            for (UnknownFieldData unknownField : unknownFieldData) {
-                size += unknownField.computeSerializedSize();
-            }
-        }
-        return size;
-    }
-
-    void writeTo(CodedOutputByteBufferNano output) throws IOException {
-        if (value != null) {
-            cachedExtension.writeTo(value, output);
-        } else {
-            for (UnknownFieldData unknownField : unknownFieldData) {
-                unknownField.writeTo(output);
-            }
-        }
-    }
-
-    @Override
-    public boolean equals(Object o) {
-        if (o == this) {
-            return true;
-        }
-        if (!(o instanceof FieldData)) {
-            return false;
-        }
-
-        FieldData other = (FieldData) o;
-        if (value != null && other.value != null) {
-            // If both objects have deserialized values, compare those.
-            // Since unknown fields are only compared if messages have generated equals methods
-            // we know this will be a meaningful comparison (not identity) for all values.
-            if (cachedExtension != other.cachedExtension) {  // Extension objects are singletons.
-                return false;
-            }
-            if (!cachedExtension.clazz.isArray()) {
-                // Can't test (!cachedExtension.repeated) due to 'bytes' -> 'byte[]'
-                return value.equals(other.value);
-            }
-            if (value instanceof byte[]) {
-                return Arrays.equals((byte[]) value, (byte[]) other.value);
-            } else if (value instanceof int[]) {
-                return Arrays.equals((int[]) value, (int[]) other.value);
-            } else if (value instanceof long[]) {
-                return Arrays.equals((long[]) value, (long[]) other.value);
-            } else if (value instanceof float[]) {
-                return Arrays.equals((float[]) value, (float[]) other.value);
-            } else if (value instanceof double[]) {
-                return Arrays.equals((double[]) value, (double[]) other.value);
-            } else if (value instanceof boolean[]) {
-                return Arrays.equals((boolean[]) value, (boolean[]) other.value);
-            } else {
-                return Arrays.deepEquals((Object[]) value, (Object[]) other.value);
-            }
-        }
-        if (unknownFieldData != null && other.unknownFieldData != null) {
-            // If both objects have byte arrays compare those directly.
-            return unknownFieldData.equals(other.unknownFieldData);
-        }
-        try {
-            // As a last resort, serialize and compare the resulting byte arrays.
-            return Arrays.equals(toByteArray(), other.toByteArray());
-        } catch (IOException e) {
-            // Should not happen.
-            throw new IllegalStateException(e);
-        }
-    }
-
-    @Override
-    public int hashCode() {
-        int result = 17;
-        try {
-            // The only way to generate a consistent hash is to use the serialized form.
-            result = 31 * result + Arrays.hashCode(toByteArray());
-        } catch (IOException e) {
-            // Should not happen.
-            throw new IllegalStateException(e);
-        }
-        return result;
-    }
-
-    private byte[] toByteArray() throws IOException {
-        byte[] result = new byte[computeSerializedSize()];
-        CodedOutputByteBufferNano output = CodedOutputByteBufferNano.newInstance(result);
-        writeTo(output);
-        return result;
-    }
-
-    @Override
-    public final FieldData clone() {
-        FieldData clone = new FieldData();
-        try {
-            clone.cachedExtension = cachedExtension;
-            if (unknownFieldData == null) {
-                clone.unknownFieldData = null;
-            } else {
-                clone.unknownFieldData.addAll(unknownFieldData);
-            }
-
-            // Whether we need to deep clone value depends on its type. Primitive reference types
-            // (e.g. Integer, Long etc.) are ok, since they're immutable. We need to clone arrays
-            // and messages.
-            if (value == null) {
-                // No cloning required.
-            } else if (value instanceof MessageNano) {
-                clone.value = ((MessageNano) value).clone();
-            } else if (value instanceof byte[]) {
-                clone.value = ((byte[]) value).clone();
-            } else if (value instanceof byte[][]) {
-                byte[][] valueArray = (byte[][]) value;
-                byte[][] cloneArray = new byte[valueArray.length][];
-                clone.value = cloneArray;
-                for (int i = 0; i < valueArray.length; i++) {
-                    cloneArray[i] = valueArray[i].clone();
-                }
-            } else if (value instanceof boolean[]) {
-                clone.value = ((boolean[]) value).clone();
-            } else if (value instanceof int[]) {
-                clone.value = ((int[]) value).clone();
-            } else if (value instanceof long[]) {
-                clone.value = ((long[]) value).clone();
-            } else if (value instanceof float[]) {
-                clone.value = ((float[]) value).clone();
-            } else if (value instanceof double[]) {
-                clone.value = ((double[]) value).clone();
-            } else if (value instanceof MessageNano[]) {
-                MessageNano[] valueArray = (MessageNano[]) value;
-                MessageNano[] cloneArray = new MessageNano[valueArray.length];
-                clone.value = cloneArray;
-                for (int i = 0; i < valueArray.length; i++) {
-                    cloneArray[i] = valueArray[i].clone();
-                }
-            }
-            return clone;
-        } catch (CloneNotSupportedException e) {
-            throw new AssertionError(e);
-        }
-    }
-}