Increase visibility on node methods for internal use cases.

PiperOrigin-RevId: 224740251

src/main/java/com/google/devtools/build/skyframe/DirtyBuildingState.java

@@ -156,7 +156,7 @@ && getNumOfGroupsInLastBuildDirectDeps() == dirtyDirectDepIndex) {
    * <p>Changes in direct deps do <i>not</i> force this to return false. Only the value is
    * considered.
    */
-  final boolean unchangedFromLastBuild(SkyValue newValue) throws InterruptedException {
+  public final boolean unchangedFromLastBuild(SkyValue newValue) throws InterruptedException {
     checkFinishedBuildingWhenAboutToSetValue();
     return !(newValue instanceof NotComparableSkyValue) && getLastBuildValue().equals(newValue);
   }

src/main/java/com/google/devtools/build/skyframe/InMemoryNodeEntry.java

@@ -324,13 +324,13 @@ public synchronized Set<SkyKey> setValue(SkyValue value, Version version)
   }
 
   /**
-   * Returns {@code true} if this node is eligible to be change pruned when its value has not
+   * Returns {@code true} if this node is eligible to be change-pruned when its value has not
    * changed from the last build.
    *
-   * <p>Implementations need not check whether the value has changed - this will only be called if
-   * the value has not changed.
+   * <p>Implementations need not check whether the value has changed - nodes will only be
+   * change-pruned if the value has not changed.
    */
-  protected boolean isEligibleForChangePruning() {
+  public boolean isEligibleForChangePruning() {
     return true;
   }
 

src/test/java/com/google/devtools/build/skyframe/InMemoryNodeEntryTest.java

@@ -613,7 +613,7 @@ public void ineligibleForPruning() throws InterruptedException {
     NodeEntry entry =
         new InMemoryNodeEntry() {
           @Override
-          protected boolean isEligibleForChangePruning() {
+          public boolean isEligibleForChangePruning() {
             return false;
           }
         };