Remove Compiler.mainApp and Compiler.mainFunction

pkg/compiler/tool/perf.dart

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /// An entrypoint used to run portions of dart2js and measure its performance.
 library compiler.tool.perf;
 
 import 'dart:async';
 import 'dart:io';
 
@@ skipping 326 matching lines @@
 class MyCompiler extends CompilerImpl {
   MyCompiler(CompilerInput provider, CompilerDiagnostics handler,
       CompilerOptions options)
       : super(provider, null, handler, options) {}
 
   /// Performs the compilation when all libraries have been loaded.
   void compileLoadedLibraries(LibraryEntity rootLibrary) =>
       selfTask.measureSubtask('KernelCompiler.compileLoadedLibraries', () {
         ResolutionEnqueuer resolutionEnqueuer = startResolution();
         WorldImpactBuilderImpl mainImpact = new WorldImpactBuilderImpl();
-        mainFunction = frontendStrategy.computeMain(rootLibrary, mainImpact);
-        mirrorUsageAnalyzerTask.analyzeUsage(mainApp);
+        var mainFunction =
+            frontendStrategy.computeMain(rootLibrary, mainImpact);
+        mirrorUsageAnalyzerTask.analyzeUsage(rootLibrary);
 
-        deferredLoadTask.beforeResolution(this);
+        deferredLoadTask.beforeResolution(rootLibrary);
         impactStrategy = backend.createImpactStrategy(
             supportDeferredLoad: deferredLoadTask.isProgramSplit,
             supportDumpInfo: options.dumpInfo,
             supportSerialization: serialization.supportSerialization);
 
         phase = Compiler.PHASE_RESOLVING;
         resolutionEnqueuer.applyImpact(mainImpact);
         // Note: we enqueue everything in the program so we measure generating
         // kernel for the entire code, not just what's reachable from main.
         libraryLoader.libraries.forEach((LibraryEntity library) {
@@ skipping 11 matching lines @@
         (reporter as CompilerDiagnosticReporter)
             .reportSuppressedMessagesSummary();
 
         if (compilationFailed) {
           // TODO(sigmund): more diagnostics?
           print('compilation failed!');
           exit(1);
         }
 
         backend.onResolutionEnd();
-        closeResolution();
+        closeResolution(mainFunction);
         var program = (backend as dynamic).kernelTask.program;
         print('total libraries: ${program.libraries.length}');
       });
 }