Further encapsulate Enqueuer

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 355 matching lines @@
         impactStrategy = backend.createImpactStrategy(
             supportDeferredLoad: deferredLoadTask.isProgramSplit,
             supportDumpInfo: options.dumpInfo,
             supportSerialization: serialization.supportSerialization);
 
         phase = Compiler.PHASE_RESOLVING;
         enqueuer.resolution.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((LibraryElement library) {
-          fullyEnqueueLibrary(library, enqueuer.resolution);
+          enqueuer.resolution.applyImpact(computeImpactForLibrary(library));
         });
 
         if (deferredLoadTask.isProgramSplit) {
           enqueuer.resolution.applyImpact(
               backend.computeDeferredLoadingImpact());
         }
         enqueuer.resolution.applyImpact(backend.computeHelpersImpact());
         resolveLibraryMetadata();
         reporter.log('Resolving...');
         processQueue(enqueuer.resolution, mainFunction);
         enqueuer.resolution.logSummary(reporter.log);
 
         (reporter as CompilerDiagnosticReporter)
             .reportSuppressedMessagesSummary();
 
         if (compilationFailed) {
           // TODO(sigmund): more diagnostics?
           print("compilation failed!");
           exit(1);
         }
 
         closeResolution();
         var program = (backend as dynamic).kernelTask.program;
         print('total libraries: ${program.libraries.length}');
       });
 }