diff --git a/runtime/bin/vmservice/client/deployed/web/packages/polymer/src/js/polymer/layout.html b/runtime/bin/vmservice/client/deployed/web/packages/polymer/src/js/polymer/layout.html
new file mode 100644
index 0000000..4e1284b
--- /dev/null
+++ b/runtime/bin/vmservice/client/deployed/web/packages/polymer/src/js/polymer/layout.html
@@ -0,0 +1,278 @@
+<!--
+Copyright (c) 2014 The Polymer Project Authors. All rights reserved.
+This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+Code distributed by Google as part of the polymer project is also
+subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+-->
+<style shim-shadowdom>
+/*******************************
+          Flex Layout
+*******************************/
+
+html /deep/ [layout][horizontal], html /deep/ [layout][vertical] {
+  display: -ms-flexbox;
+  display: -webkit-flex;
+  display: flex;
+}
+
+html /deep/ [layout][horizontal][inline], html /deep/ [layout][vertical][inline] {
+  display: -ms-inline-flexbox;
+  display: -webkit-inline-flex;
+  display: inline-flex;
+}
+
+html /deep/ [layout][horizontal] {
+  -ms-flex-direction: row;
+  -webkit-flex-direction: row;
+  flex-direction: row;
+}
+
+html /deep/ [layout][horizontal][reverse] {
+  -ms-flex-direction: row-reverse;
+  -webkit-flex-direction: row-reverse;
+  flex-direction: row-reverse;
+}
+
+html /deep/ [layout][vertical] {
+  -ms-flex-direction: column;
+  -webkit-flex-direction: column;
+  flex-direction: column;
+}
+
+html /deep/ [layout][vertical][reverse] {
+  -ms-flex-direction: column-reverse;
+  -webkit-flex-direction: column-reverse;
+  flex-direction: column-reverse;
+}
+
+html /deep/ [layout][wrap] {
+  -ms-flex-wrap: wrap;
+  -webkit-flex-wrap: wrap;
+  flex-wrap: wrap;
+}
+
+html /deep/ [layout][wrap-reverse] {
+  -ms-flex-wrap: wrap-reverse;
+  -webkit-flex-wrap: wrap-reverse;
+  flex-wrap: wrap-reverse;
+}
+
+html /deep/ [flex] {
+  -ms-flex: 1;
+  -webkit-flex: 1;
+  flex: 1;
+}
+
+html /deep/ [flex][auto] {
+  -ms-flex: 1 1 auto;
+  -webkit-flex: 1 1 auto;
+  flex: 1 1 auto;
+}
+
+html /deep/ [flex][none] {
+  -ms-flex: none;
+  -webkit-flex: none;
+  flex: none;
+}
+
+html /deep/ [flex][one] {
+  -ms-flex: 1;
+  -webkit-flex: 1;
+  flex: 1;
+}
+
+html /deep/ [flex][two] {
+  -ms-flex: 2;
+  -webkit-flex: 2;
+  flex: 2;
+}
+
+html /deep/ [flex][three] {
+  -ms-flex: 3;
+  -webkit-flex: 3;
+  flex: 3;
+}
+
+html /deep/ [flex][four] {
+  -ms-flex: 4;
+  -webkit-flex: 4;
+  flex: 4;
+}
+
+html /deep/ [flex][five] {
+  -ms-flex: 5;
+  -webkit-flex: 5;
+  flex: 5;
+}
+
+html /deep/ [flex][six] {
+  -ms-flex: 6;
+  -webkit-flex: 6;
+  flex: 6;
+}
+
+html /deep/ [flex][seven] {
+  -ms-flex: 7;
+  -webkit-flex: 7;
+  flex: 7;
+}
+
+html /deep/ [flex][eight] {
+  -ms-flex: 8;
+  -webkit-flex: 8;
+  flex: 8;
+}
+
+html /deep/ [flex][nine] {
+  -ms-flex: 9;
+  -webkit-flex: 9;
+  flex: 9;
+}
+
+html /deep/ [flex][ten] {
+  -ms-flex: 10;
+  -webkit-flex: 10;
+  flex: 10;
+}
+
+html /deep/ [flex][eleven] {
+  -ms-flex: 11;
+  -webkit-flex: 11;
+  flex: 11;
+}
+
+html /deep/ [flex][twelve] {
+  -ms-flex: 12;
+  -webkit-flex: 12;
+  flex: 12;
+}
+
+/* alignment in cross axis */
+
+html /deep/ [layout][start] {
+  -ms-flex-align: start;
+  -webkit-align-items: flex-start;
+  align-items: flex-start;
+}
+
+html /deep/ [layout][center] {
+  -ms-flex-align: center;
+  -webkit-align-items: center;
+  align-items: center;
+}
+
+html /deep/ [layout][end] {
+  -ms-flex-align: end;
+  -webkit-align-items: flex-end;
+  align-items: flex-end;
+}
+
+/* alignment in main axis */
+
+html /deep/ [layout][start-justified] {
+  -ms-flex-pack: start;
+  -webkit-justify-content: flex-start;
+  justify-content: flex-start;
+}
+
+html /deep/ [layout][center-justified] {
+  -ms-flex-pack: center;
+  -webkit-justify-content: center;
+  justify-content: center;
+}
+
+html /deep/ [layout][end-justified] {
+  -ms-flex-pack: end;
+  -webkit-justify-content: flex-end;
+  justify-content: flex-end;
+}
+
+html /deep/ [layout][around-justified] {
+  -ms-flex-pack: around;
+  -webkit-justify-content: space-around;
+  justify-content: space-around;
+}
+
+html /deep/ [layout][justified] {
+  -ms-flex-pack: justify;
+  -webkit-justify-content: space-between;
+  justify-content: space-between;
+}
+
+/* self alignment */
+
+html /deep/ [self-start] {
+  -ms-align-self: flex-start;
+  -webkit-align-self: flex-start;
+  align-self: flex-start;
+}
+
+html /deep/ [self-center] {
+  -ms-align-self: center;
+  -webkit-align-self: center;
+  align-self: center;
+}
+
+html /deep/ [self-end] {
+  -ms-align-self: flex-end;
+  -webkit-align-self: flex-end;
+  align-self: flex-end;
+}
+
+html /deep/ [self-stretch] {
+  -ms-align-self: stretch;
+  -webkit-align-self: stretch;
+  align-self: stretch;
+}
+
+/*******************************
+          Other Layout
+*******************************/
+
+html /deep/ [block] {
+  display: block;
+}
+
+/* ie support for hidden */
+html /deep/ [hidden] {
+  display: none;
+}
+
+html /deep/ [relative] {
+  position: relative;
+}
+
+html /deep/ [fit] {
+  position: absolute;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  left: 0;
+}
+
+body[fullbleed] {
+  margin: 0;
+  height: 100vh;
+}
+
+/*******************************
+            Other
+*******************************/
+
+html /deep/ [segment], html /deep/ segment {
+  display: block;
+  position: relative;
+  -webkit-box-sizing: border-box;
+  -ms-box-sizing: border-box;
+  box-sizing: border-box;
+  margin: 1em 0.5em;
+  padding: 1em;
+  background-color: white;
+  -webkit-box-shadow: 0px 0px 0px 1px rgba(0, 0, 0, 0.1);
+  box-shadow: 0px 0px 0px 1px rgba(0, 0, 0, 0.1);
+  border-radius: 5px 5px 5px 5px;
+}
+
+</style>
\ No newline at end of file
diff --git a/tools/VERSION b/tools/VERSION
index 8fb7ca2..dfbe995 100644
--- a/tools/VERSION
+++ b/tools/VERSION
@@ -28,4 +28,4 @@
 MINOR 5
 PATCH 0
 PRERELEASE 4
-PRERELEASE_PATCH 19
+PRERELEASE_PATCH 20