Incremental KAPT - pass changed classpath entries

Pass computed list of changed classpath names to KAPT instead
of relying on the history files to be computed by stub generation.
Also, stop generating classpath history changes during the stub generation.

This commit does not compute the actual changed classpath entries,
and that will be done in the following commits.

 #KT-23880

compiler/incremental-compilation-impl/src/org/jetbrains/kotlin/incremental/IncrementalCompilerRunner.kt

@@ -313,7 +313,7 @@ abstract class IncrementalCompilerRunner<
 
     open fun runWithNoDirtyKotlinSources(caches: CacheManager): Boolean = false
 
-    protected open fun processChangesAfterBuild(
+    private fun processChangesAfterBuild(
         compilationMode: CompilationMode,
         currentBuildInfo: BuildInfo,
         dirtyData: DirtyData

compiler/incremental-compilation-impl/src/org/jetbrains/kotlin/incremental/IncrementalJvmCompilerRunner.kt

@@ -109,8 +109,7 @@ class IncrementalJvmCompilerRunner(
     buildHistoryFile: File,
     outputFiles: Collection<File>,
     private val modulesApiHistory: ModulesApiHistory,
-    override val kotlinSourceFilesExtensions: List<String> = DEFAULT_KOTLIN_SOURCE_FILES_EXTENSIONS,
-    private val classpathFqNamesHistory: File? = null
+    override val kotlinSourceFilesExtensions: List<String> = DEFAULT_KOTLIN_SOURCE_FILES_EXTENSIONS
 ) : IncrementalCompilerRunner<K2JVMCompilerArguments, IncrementalJvmCachesManager>(
     workingDir,
     "caches-jvm",
@@ -257,28 +256,6 @@ class IncrementalJvmCompilerRunner(
         }
     }
 
-    override fun processChangesAfterBuild(compilationMode: CompilationMode, currentBuildInfo: BuildInfo, dirtyData: DirtyData) {
-        super.processChangesAfterBuild(compilationMode, currentBuildInfo, dirtyData)
-
-        classpathFqNamesHistory ?: return
-        classpathFqNamesHistory.mkdirs()
-
-        val historyFiles = classpathFqNamesHistory.listFiles()
-        if (dirtyClasspathChanges.isEmpty() && historyFiles.isNotEmpty()) {
-            // Don't write an empty file. We check there is at least one file so that downstream task can mark what it has processed.
-            return
-        }
-
-        if (historyFiles.size > 10) {
-            historyFiles.minBy { it.lastModified() }!!.delete()
-        }
-        val newHistoryFile = classpathFqNamesHistory.resolve(System.currentTimeMillis().toString())
-        ObjectOutputStream(newHistoryFile.outputStream().buffered()).use {
-            val listOfNames = dirtyClasspathChanges.map { it.toString() }.toList()
-            it.writeObject(listOfNames)
-        }
-    }
-
     override fun postCompilationHook(exitCode: ExitCode) {}
 
     override fun updateCaches(