Removed fixed dependencies

packages/analyzer/tool/summary/build_sdk_summaries.dart

+import 'dart:io';
+
+import 'package:analyzer/file_system/physical_file_system.dart';
+import 'package:analyzer/src/dart/sdk/sdk.dart';
+import 'package:analyzer/src/summary/summary_file_builder.dart';
+
+main(List<String> args) {
+  String command;
+  String outFilePath;
+  String sdkPath;
+  if (args.length == 2) {
+    command = args[0];
+    outFilePath = args[1];
+  } else if (args.length == 3) {
+    command = args[0];
+    outFilePath = args[1];
+    sdkPath = args[2];
+  } else {
+    _printUsage();
+    exitCode = 1;
+    return;
+  }
+
+  //
+  // Validate the SDK path.
+  //
+  sdkPath ??= FolderBasedDartSdk
+      .defaultSdkDirectory(PhysicalResourceProvider.INSTANCE)
+      .path;
+  if (!FileSystemEntity.isDirectorySync('$sdkPath/lib')) {
+    print("'$sdkPath/lib' does not exist.");
+    _printUsage();
+    return;
+  }
+
+  //
+  // Handle commands.
+  //
+  if (command == 'build-spec') {
+    _buildSummary(sdkPath, outFilePath, false);
+  } else if (command == 'build-strong') {
+    _buildSummary(sdkPath, outFilePath, true);
+  } else {
+    _printUsage();
+    return;
+  }
+}
+
+/**
+ * The name of the SDK summaries builder application.
+ */
+const BINARY_NAME = "build_sdk_summaries";
+
+void _buildSummary(String sdkPath, String outPath, bool strong) {
+  String modeName = strong ? 'strong' : 'spec';
+  print('Generating $modeName mode summary.');
+  Stopwatch sw = new Stopwatch()..start();
+  List<int> bytes = new SummaryBuilder.forSdk(sdkPath, strong).build();
+  new File(outPath).writeAsBytesSync(bytes, mode: FileMode.WRITE_ONLY);
+  print('\tDone in ${sw.elapsedMilliseconds} ms.');
+}
+
+/**
+ * Print information about how to use the SDK summaries builder.
+ */
+void _printUsage() {
+  print('Usage: $BINARY_NAME command arguments');
+  print('Where command can be one of the following:');
+  print('  build-spec output_file [sdk_path]');
+  print('    Generate spec mode summary file.');
+  print('  build-strong output_file [sdk_path]');
+  print('    Generate strong mode summary file.');
+}