VM: Split GYP build target 'runtime' to speedup SDK build times.

dart.gyp

 # Copyright (c) 2012, 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.
 
 {
   'targets': [
     {
       'target_name': 'most',
       'type': 'none',
       'dependencies': [
         'analysis_server',
         'create_sdk',
         'dart2js',
         'dartanalyzer',
         'dartdevc',
         'packages',
         'runtime',
         'samples',
       ],
     },
     {
       # This is the target that is built on the VM build bots.  It
       # must depend on anything that is required by the VM test
       # suites.
       'target_name': 'runtime',
       'type': 'none',
       'dependencies': [
         'runtime/dart-runtime.gyp:dart',
+        'runtime/dart-runtime.gyp:dart_bootstrap#host',
+        'runtime/dart-runtime.gyp:run_vm_tests',
+        'runtime/dart-runtime.gyp:process_test',
+        'packages',
+        'runtime/dart-runtime.gyp:test_extension',
+        'runtime/dart-runtime.gyp:sample_extension',
+      ],
+    },
+    {
+      # This is the target that is built on the VM build bots.  It
+      # must depend on anything that is required by the VM test
+      # suites.
+      'target_name': 'runtime_precompiled',
+      'type': 'none',
+      'dependencies': [
+        'runtime/dart-runtime.gyp:dart_precompiled_runtime',
+        'runtime/dart-runtime.gyp:dart_bootstrap#host',
+        'packages',
+      ],
+    },
+    {
+      # This is the target that is built on the VM build bots.  It
+      # must depend on anything that is required by the VM test
+      # suites.
+      'target_name': 'runtime_and_noopt',
+      'type': 'none',
+      'dependencies': [
+        'runtime/dart-runtime.gyp:dart',
         'runtime/dart-runtime.gyp:dart_noopt',
-        'runtime/dart-runtime.gyp:dart_precompiled_runtime',
         'runtime/dart-runtime.gyp:dart_bootstrap#host',
         'runtime/dart-runtime.gyp:run_vm_tests',
         'runtime/dart-runtime.gyp:process_test',
         'packages',
         'runtime/dart-runtime.gyp:test_extension',
         'runtime/dart-runtime.gyp:sample_extension',
       ],
     },
     {
       'target_name': 'create_sdk',
@@ skipping 84 matching lines @@
     },
     {
       'target_name': 'try',
       'type': 'none',
       'dependencies': [
         'site/try/build_try.gyp:try_site',
       ],
     },
   ],
 }