Rationalize Dart mojo and sky package structure

mojo/dart/embedder/test/run_dart_tests.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "crypto/random.h"
@@ skipping 29 matching lines @@
              .AppendASCII(test);
 
   // Read in the source.
   std::string source;
   EXPECT_TRUE(ReadFileToString(path, &source)) << "Failed to read test file";
 
   // Setup the package root.
   base::FilePath package_root;
   PathService::Get(base::DIR_EXE, &package_root);
   package_root = package_root.AppendASCII("gen")
-                             .AppendASCII("dart-gen");
+                             .AppendASCII("dart-pkg")
+                             .AppendASCII("packages");
 
   char* error = NULL;
   bool unhandled_exception = false;
   DartControllerConfig config;
   // Run with strict compilation even in Release mode so that ASAN testing gets
   // coverage of Dart asserts, type-checking, etc.
   config.strict_compilation = true;
   config.script = source;
   config.script_uri = path.AsUTF8Unsafe();
   config.package_root = package_root.AsUTF8Unsafe();
@@ skipping 87 matching lines @@
   const int kNumArgs = 2;
   const char* args[kNumArgs];
   args[0] = "--new-gen-semi-max-size=1";
   args[1] = "--old_gen_growth_rate=1";
   RunTest("handle_finalizer_test.dart", false, args, kNumArgs);
 }
 
 }  // namespace
 }  // namespace dart
 }  // namespace mojo