Reverts third_party/protobuf: Update to HEAD (f52e188fe4)

third_party/protobuf/java/core/src/main/java/com/google/protobuf/AbstractMessage.java

Index: third_party/protobuf/java/core/src/main/java/com/google/protobuf/AbstractMessage.java
diff --git a/third_party/protobuf/java/core/src/main/java/com/google/protobuf/AbstractMessage.java b/third_party/protobuf/java/core/src/main/java/com/google/protobuf/AbstractMessage.java
index 7639efcfca6788e93d1c0b36150ffaf812c700e9..03c0d5797d3507c2eb47872b9e3f34273abbbc9e 100644
--- a/third_party/protobuf/java/core/src/main/java/com/google/protobuf/AbstractMessage.java
+++ b/third_party/protobuf/java/core/src/main/java/com/google/protobuf/AbstractMessage.java
@@ -54,40 +54,12 @@ public abstract class AbstractMessage
     // TODO(dweis): Update GeneratedMessage to parameterize with MessageType and BuilderType.
     extends AbstractMessageLite
     implements Message {
-
+  
   @Override
   public boolean isInitialized() {
     return MessageReflection.isInitialized(this);
   }
 
-  /**
-   * Interface for the parent of a Builder that allows the builder to
-   * communicate invalidations back to the parent for use when using nested
-   * builders.
-   */
-  protected interface BuilderParent {
-
-    /**
-     * A builder becomes dirty whenever a field is modified -- including fields
-     * in nested builders -- and becomes clean when build() is called.  Thus,
-     * when a builder becomes dirty, all its parents become dirty as well, and
-     * when it becomes clean, all its children become clean.  The dirtiness
-     * state is used to invalidate certain cached values.
-     * <br>
-     * To this end, a builder calls markDirty() on its parent whenever it
-     * transitions from clean to dirty.  The parent must propagate this call to
-     * its own parent, unless it was already dirty, in which case the
-     * grandparent must necessarily already be dirty as well.  The parent can
-     * only transition back to "clean" after calling build() on all children.
-     */
-    void markDirty();
-  }
-
-  /** Create a nested builder. */
-  protected Message.Builder newBuilderForType(BuilderParent parent) {
-    throw new UnsupportedOperationException("Nested builder is not supported for this type.");
-  }
-
 
   @Override
   public List<String> findInitializationErrors() {
@@ -488,31 +460,6 @@ public abstract class AbstractMessage
           MessageReflection.findMissingFields(message));
     }
 
-    /**
-     * Used to support nested builders and called to mark this builder as clean.
-     * Clean builders will propagate the {@link BuilderParent#markDirty()} event
-     * to their parent builders, while dirty builders will not, as their parents
-     * should be dirty already.
-     *
-     * NOTE: Implementations that don't support nested builders don't need to
-     * override this method.
-     */
-    void markClean() {
-      throw new IllegalStateException("Should be overridden by subclasses.");
-    }
-
-    /**
-     * Used to support nested builders and called when this nested builder is
-     * no longer used by its parent builder and should release the reference
-     * to its parent builder.
-     *
-     * NOTE: Implementations that don't support nested builders don't need to
-     * override this method.
-     */
-    void dispose() {
-      throw new IllegalStateException("Should be overridden by subclasses.");
-    }
-
     // ===============================================================
     // The following definitions seem to be required in order to make javac
     // not produce weird errors like:
@@ -603,44 +550,4 @@ public abstract class AbstractMessage
       return super.mergeDelimitedFrom(input, extensionRegistry);
     }
   }
-
-  /**
-   * @deprecated from v3.0.0-beta-3+, for compatibility with v2.5.0 and v2.6.1
-   * generated code.
-   */
-  @Deprecated
-  protected static int hashLong(long n) {
-    return (int) (n ^ (n >>> 32));
-  }
-  //
-  /**
-   * @deprecated from v3.0.0-beta-3+, for compatibility with v2.5.0 and v2.6.1
-   * generated code.
-   */
-  @Deprecated
-  protected static int hashBoolean(boolean b) {
-    return b ? 1231 : 1237;
-  }
-  //
-  /**
-   * @deprecated from v3.0.0-beta-3+, for compatibility with v2.5.0 and v2.6.1
-   * generated code.
-   */
-  @Deprecated
-  protected static int hashEnum(EnumLite e) {
-    return e.getNumber();
-  }
-  //
-  /**
-   * @deprecated from v3.0.0-beta-3+, for compatibility with v2.5.0 and v2.6.1
-   * generated code.
-   */
-  @Deprecated
-  protected static int hashEnumList(List<? extends EnumLite> list) {
-    int hash = 1;
-    for (EnumLite e : list) {
-      hash = 31 * hash + hashEnum(e);
-    }
-    return hash;
-  }
 }