Add packages to optimize svgs dynamically

These packages will be used to dynamically optimize SVG images
during the build.

R=jacktfranklin@chromium.org

Bug: 1216402
Change-Id: I04e95aa7d79c9d67beaf8a7861182c52b16b7d0f
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2939992
Reviewed-by: Jack Franklin <jacktfranklin@chromium.org>
Commit-Queue: Tim van der Lippe <tvanderlippe@chromium.org>
diff --git a/node_modules/css-tree/lib/common/adopt-buffer.js b/node_modules/css-tree/lib/common/adopt-buffer.js
new file mode 100644
index 0000000..ef35b9b
--- /dev/null
+++ b/node_modules/css-tree/lib/common/adopt-buffer.js
@@ -0,0 +1,10 @@
+var MIN_SIZE = 16 * 1024;
+var SafeUint32Array = typeof Uint32Array !== 'undefined' ? Uint32Array : Array; // fallback on Array when TypedArray is not supported
+
+module.exports = function adoptBuffer(buffer, size) {
+    if (buffer === null || buffer.length < size) {
+        return new SafeUint32Array(Math.max(size + 1024, MIN_SIZE));
+    }
+
+    return buffer;
+};