Move Compiler.libraries to LibraryLoader.

pkg/dart2js_incremental/lib/caching_compiler.dart

Index: pkg/dart2js_incremental/lib/caching_compiler.dart
diff --git a/pkg/dart2js_incremental/lib/caching_compiler.dart b/pkg/dart2js_incremental/lib/caching_compiler.dart
index 181f405e3782c877863ff2e997fbf49c3caba00e..8c4f5bd073072e3487c41cb40ae25634f3775ac4 100644
--- a/pkg/dart2js_incremental/lib/caching_compiler.dart
+++ b/pkg/dart2js_incremental/lib/caching_compiler.dart
@@ -130,15 +130,9 @@ Compiler reuseCompiler(
     backend
         ..preMirrorsMethodCount = 0;
 
-    Map libraries = new Map.from(compiler.libraries);
-    compiler.libraries.clear();
-    compiler.libraryLoader.reset();
-    libraries.forEach((String uri, LibraryElement library) {
-      if (library.isPlatformLibrary ||
-          (packagesAreImmutable && library.isPackageLibrary)) {
-        compiler.libraries[uri] = library;
-        compiler.libraryLoader.reuseLibrary(library);
-      }
+    compiler.libraryLoader.reset(reuseLibrary: (LibraryElement library) {

[ahe, 2014/06/26 10:32:40]

This file still LGTM

+      return library.isPlatformLibrary ||
+             (packagesAreImmutable && library.isPackageLibrary);
     });
   }
   oldTag.makeCurrent();