Roll Dart (#3703)

DEPS

@@ -24,12 +24,18 @@ vars = {
   'github_git': 'https://github.com',
   'skia_revision': 'efa48d599de15d960d7335a4a93a6bbeb97d3c41',
 
-  # Note: When updating the Dart revision, ensure that all entries that are
-  # dependencies of dart are also updated
-  'dart_revision': '42ec925a9e8be87e515f06440e01e11c832b8da7',
+  # When updating the Dart revision, ensure that all entries that are
+  # dependencies of Dart are also updated to match the entries in the
+  # Dart SDK's DEPS file for that revision of Dart. The DEPS file for
+  # Dart is: https://github.com/dart-lang/sdk/blob/master/DEPS
+  'dart_revision': '425626363a0c8f80cd8861fa5c7ee9eba121533a',
+  # Dart calls the next one "boringssl_gen_rev"
   'dart_boringssl_gen_revision': '753224969dbe43dad29343146529727b5066c0f3',
+  # Dart calls the next one "boringssl_rev"
   'dart_boringssl_revision': 'd519bf6be0b447fb80fbc539d4bff4479b5482a2',
+  # Dart calls the next one "observatory_pub_packages_rev"
   'dart_observatory_packages_revision': '26aad88f1c1915d39bbcbff3cad589e2402fdcf1',
+  # Dart calls the next one "root_certificates_rev"
   'dart_root_certificates_revision': 'a4c7c6f23a664a37bc1b6f15a819e3f2a292791a',
 
   'buildtools_revision': 'c8db819853bcf8ce1635a8b7a395820f39b5a9fc',

travis/licenses_golden/licenses_dart

-Signature: 1dd1e60e03d3a8731a9459ed80f0b8a3
+Signature: 01dbc1899b46fdc23da42e219822b51e
 
 UNUSED LICENSES:
 
@@ -246,7 +246,6 @@ FILE: ../../../dart/runtime/vm/class_table.h
 FILE: ../../../dart/runtime/vm/code_descriptors.cc
 FILE: ../../../dart/runtime/vm/code_descriptors.h
 FILE: ../../../dart/runtime/vm/code_descriptors_test.cc
-FILE: ../../../dart/runtime/vm/code_generator.h
 FILE: ../../../dart/runtime/vm/code_generator_test.cc
 FILE: ../../../dart/runtime/vm/code_observers.cc
 FILE: ../../../dart/runtime/vm/code_observers.h
@@ -817,7 +816,6 @@ FILE: ../../../dart/runtime/vm/atomic_win.h
 FILE: ../../../dart/runtime/vm/block_scheduler.cc
 FILE: ../../../dart/runtime/vm/block_scheduler.h
 FILE: ../../../dart/runtime/vm/class_finalizer.cc
-FILE: ../../../dart/runtime/vm/code_generator.cc
 FILE: ../../../dart/runtime/vm/code_patcher_arm.cc
 FILE: ../../../dart/runtime/vm/code_patcher_arm_test.cc
 FILE: ../../../dart/runtime/vm/code_patcher_mips.cc
@@ -1229,7 +1227,6 @@ FILE: ../../../dart/.mailmap
 FILE: ../../../dart/.travis.yml
 FILE: ../../../dart/client/idea/.idea/.name
 FILE: ../../../dart/client/idea/.idea/inspectionProfiles/Project_Default.xml
-FILE: ../../../dart/client/idea/.idea/modules.xml
 FILE: ../../../dart/client/idea/.idea/vcs.xml
 FILE: ../../../dart/runtime/CPPLINT.cfg
 FILE: ../../../dart/runtime/bin/vmserviceio_dartium.dart
@@ -1589,6 +1586,15 @@ FILE: ../../../dart/runtime/bin/snapshot_utils.h
 FILE: ../../../dart/runtime/bin/socket_base.cc
 FILE: ../../../dart/runtime/bin/socket_base.h
 FILE: ../../../dart/runtime/bin/socket_base_unsupported.cc
+FILE: ../../../dart/runtime/bin/sync_socket.cc
+FILE: ../../../dart/runtime/bin/sync_socket.h
+FILE: ../../../dart/runtime/bin/sync_socket_android.cc
+FILE: ../../../dart/runtime/bin/sync_socket_fuchsia.cc
+FILE: ../../../dart/runtime/bin/sync_socket_linux.cc
+FILE: ../../../dart/runtime/bin/sync_socket_macos.cc
+FILE: ../../../dart/runtime/bin/sync_socket_patch.dart
+FILE: ../../../dart/runtime/bin/sync_socket_unsupported.cc
+FILE: ../../../dart/runtime/bin/sync_socket_win.cc
 FILE: ../../../dart/runtime/lib/async.cc
 FILE: ../../../dart/runtime/observatory/lib/src/elements/singletargetcache_ref.dart
 FILE: ../../../dart/runtime/observatory/lib/src/elements/singletargetcache_view.dart
@@ -1613,12 +1619,13 @@ FILE: ../../../dart/runtime/vm/fixed_cache.h
 FILE: ../../../dart/runtime/vm/fixed_cache_test.cc
 FILE: ../../../dart/runtime/vm/kernel_binary.h
 FILE: ../../../dart/runtime/vm/kernel_binary_flowgraph.h
-FILE: ../../../dart/runtime/vm/malloc_hooks.cc
 FILE: ../../../dart/runtime/vm/malloc_hooks.h
 FILE: ../../../dart/runtime/vm/malloc_hooks_arm.cc
 FILE: ../../../dart/runtime/vm/malloc_hooks_arm64.cc
 FILE: ../../../dart/runtime/vm/malloc_hooks_ia32.cc
+FILE: ../../../dart/runtime/vm/malloc_hooks_jemalloc.cc
 FILE: ../../../dart/runtime/vm/malloc_hooks_mips.cc
+FILE: ../../../dart/runtime/vm/malloc_hooks_tcmalloc.cc
 FILE: ../../../dart/runtime/vm/malloc_hooks_test.cc
 FILE: ../../../dart/runtime/vm/malloc_hooks_unsupported.cc
 FILE: ../../../dart/runtime/vm/malloc_hooks_x64.cc
@@ -1626,6 +1633,7 @@ FILE: ../../../dart/runtime/vm/stack_trace.cc
 FILE: ../../../dart/runtime/vm/stack_trace.h
 FILE: ../../../dart/runtime/vm/zone_text_buffer.cc
 FILE: ../../../dart/runtime/vm/zone_text_buffer.h
+FILE: ../../../dart/sdk/lib/io/sync_socket.dart
 ----------------------------------------------------------------------------------------------------
 Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
 for details. All rights reserved. Use of this source code is governed by a