SplitTransitionProvider no longer requires the attributes it uses are "Non Configurable"

RELNOTES: None.
PiperOrigin-RevId: 171751391
diff --git a/src/main/java/com/google/devtools/build/lib/analysis/DependencyResolver.java b/src/main/java/com/google/devtools/build/lib/analysis/DependencyResolver.java
index 33c7531..d406511 100644
--- a/src/main/java/com/google/devtools/build/lib/analysis/DependencyResolver.java
+++ b/src/main/java/com/google/devtools/build/lib/analysis/DependencyResolver.java
@@ -371,8 +371,7 @@
 
       LateBoundDefault<?, ?> lateBoundDefault = attribute.getLateBoundDefault();
 
-      Collection<BuildOptions> splitOptions =
-          getSplitOptions(depResolver.rule, attribute, ruleConfig);
+      Collection<BuildOptions> splitOptions = getSplitOptions(attributeMap, attribute, ruleConfig);
       if (!splitOptions.isEmpty() && !ruleConfig.isHostConfiguration()) {
         // Late-bound attribute with a split transition:
         // Since we want to get the same results as TransitionResolver.evaluateTransition (but
@@ -425,14 +424,15 @@
    * <p>Even though the attribute may have a split, splits don't have to apply in every
    * configuration (see {@link Attribute.SplitTransition#split}).
    */
-  private static Collection<BuildOptions> getSplitOptions(Rule rule, Attribute attribute,
+  private static Collection<BuildOptions> getSplitOptions(ConfiguredAttributeMapper attributeMap,
+      Attribute attribute,
       BuildConfiguration ruleConfig) {
     if (!attribute.hasSplitConfigurationTransition()) {
       return ImmutableList.<BuildOptions>of();
     }
     @SuppressWarnings("unchecked") // Attribute.java doesn't have the BuildOptions symbol.
     Attribute.SplitTransition<BuildOptions> transition =
-        (Attribute.SplitTransition<BuildOptions>) attribute.getSplitTransition(rule);
+        (Attribute.SplitTransition<BuildOptions>) attribute.getSplitTransition(attributeMap);
     return transition.split(ruleConfig.getOptions());
   }
 
@@ -716,7 +716,7 @@
         return; // Skip this round: we still need to Skyframe-evaluate the dep's target.
       }
       Attribute.Transition transition = transitionResolver.evaluateTransition(
-          ruleConfig, rule, attributeAndOwner.attribute, toTarget);
+          ruleConfig, rule, attributeAndOwner.attribute, toTarget, attributeMap);
       outgoingEdges.put(
           attributeAndOwner.attribute,
           transition == Attribute.ConfigurationTransition.NULL
diff --git a/src/main/java/com/google/devtools/build/lib/analysis/RuleContext.java b/src/main/java/com/google/devtools/build/lib/analysis/RuleContext.java
index 55e1f20..f94ac86 100644
--- a/src/main/java/com/google/devtools/build/lib/analysis/RuleContext.java
+++ b/src/main/java/com/google/devtools/build/lib/analysis/RuleContext.java
@@ -251,7 +251,7 @@
   public Root getMiddlemanDirectory() {
     return getConfiguration().getMiddlemanDirectory(rule.getRepository());
   }
-  
+
   public Rule getRule() {
     return rule;
   }
@@ -748,7 +748,8 @@
     Attribute attributeDefinition = attributes().getAttributeDefinition(attributeName);
     @SuppressWarnings("unchecked") // Attribute.java doesn't have the BuildOptions symbol.
     SplitTransition<BuildOptions> transition =
-        (SplitTransition<BuildOptions>) attributeDefinition.getSplitTransition(rule);
+        (SplitTransition<BuildOptions>) attributeDefinition.getSplitTransition(
+            ConfiguredAttributeMapper.of(rule, configConditions));
     List<ConfiguredTarget> deps = targetMap.get(attributeName);
 
     List<BuildOptions> splitOptions = transition.split(getConfiguration().getOptions());
diff --git a/src/main/java/com/google/devtools/build/lib/analysis/config/TransitionResolver.java b/src/main/java/com/google/devtools/build/lib/analysis/config/TransitionResolver.java
index ebcefb6..289f445 100644
--- a/src/main/java/com/google/devtools/build/lib/analysis/config/TransitionResolver.java
+++ b/src/main/java/com/google/devtools/build/lib/analysis/config/TransitionResolver.java
@@ -19,6 +19,7 @@
 import com.google.devtools.build.lib.packages.Attribute.ConfigurationTransition;
 import com.google.devtools.build.lib.packages.Attribute.SplitTransition;
 import com.google.devtools.build.lib.packages.Attribute.Transition;
+import com.google.devtools.build.lib.packages.ConfiguredAttributeMapper;
 import com.google.devtools.build.lib.packages.InputFile;
 import com.google.devtools.build.lib.packages.PackageGroup;
 import com.google.devtools.build.lib.packages.Rule;
@@ -63,7 +64,7 @@
    *     {@link Attribute.ConfigurationTransition}).
    */
   public Transition evaluateTransition(BuildConfiguration fromConfig, final Rule fromRule,
-      final Attribute attribute, final Target toTarget) {
+      final Attribute attribute, final Target toTarget, ConfiguredAttributeMapper attributeMap) {
 
     // I. Input files and package groups have no configurations. We don't want to duplicate them.
     if (usesNullConfiguration(toTarget)) {
@@ -112,7 +113,7 @@
     // The "else" is a legacy restriction from static configurations.
     if (attribute.hasSplitConfigurationTransition()) {
       currentTransition = split(currentTransition,
-          (SplitTransition<BuildOptions>) attribute.getSplitTransition(fromRule));
+          (SplitTransition<BuildOptions>) attribute.getSplitTransition(attributeMap));
     } else {
       // III. Attributes determine configurations. The configuration of a prerequisite is determined
       // by the attribute.