Roll dart to 64ce51ce4bc3aa4248dba87c44775c9b84bd2b5d (#3737)

* Roll dart to 64ce51ce4bc3aa4248dba87c44775c9b84bd2b5d (last roll 13 days ago)

* Update license file - ORIGIN was changed because first file was added

DEPS

@@ -28,7 +28,7 @@ vars = {
   # 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': 'ae57eca5040cc32e97c9f4728842127f8ca5f742',
+  'dart_revision': '64ce51ce4bc3aa4248dba87c44775c9b84bd2b5d',
   # Dart calls the next one "boringssl_gen_rev"
   'dart_boringssl_gen_revision': '753224969dbe43dad29343146529727b5066c0f3',
   # Dart calls the next one "boringssl_rev"

travis/licenses_golden/licenses_dart

-Signature: 5e59e7d0835dccae00597237ea4490a5
+Signature: 73a9e0e8b98aa087fb5565862107ec16
 
 UNUSED LICENSES:
 
@@ -1242,7 +1242,6 @@ FILE: ../../../dart/runtime/observatory/web/favicon.ico
 FILE: ../../../dart/runtime/observatory/web/index.html
 FILE: ../../../dart/runtime/observatory/web/third_party/trace_viewer_full.html
 FILE: ../../../dart/runtime/observatory/web/timeline.html
-FILE: ../../../dart/runtime/vm/libraries.json
 FILE: ../../../dart/runtime/vm/snapshot_test_in.dat
 FILE: ../../../dart/samples/build_dart/test.foo
 FILE: ../../../dart/samples/build_dart_simple/test.foo
@@ -1576,8 +1575,10 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 ====================================================================================================
 LIBRARY: dart
-ORIGIN: ../../../dart/runtime/bin/error_exit.cc + ../../../dart/LICENSE
+ORIGIN: ../../../dart/runtime/bin/dfe.cc + ../../../dart/LICENSE
 TYPE: LicenseType.bsd
+FILE: ../../../dart/runtime/bin/dfe.cc
+FILE: ../../../dart/runtime/bin/dfe.h
 FILE: ../../../dart/runtime/bin/error_exit.cc
 FILE: ../../../dart/runtime/bin/error_exit.h
 FILE: ../../../dart/runtime/bin/isolate_data.cc
@@ -1629,6 +1630,8 @@ 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
+FILE: ../../../dart/runtime/vm/optimizer.cc
+FILE: ../../../dart/runtime/vm/optimizer.h
 FILE: ../../../dart/runtime/vm/stack_trace.cc
 FILE: ../../../dart/runtime/vm/stack_trace.h
 FILE: ../../../dart/runtime/vm/zone_text_buffer.cc