Move zooming into its own component, imported via HTML Imports.

experimental/webtry/poly/Gruntfile.js

+module.exports = function(grunt) {
+
+  // Project configuration.
+  grunt.initConfig({
+    pkg: grunt.file.readJSON('package.json'),
+    // Install all the packages listed in the bower.json file.
+    shell: {
+      bower_install: {
+         command: 'bower install'
+      }
+    },
+    // Copy all the bower files into a single directory.
+    bower: {
+      dev: {
+        dest: '../../../out/grunt/third_party'
+      }
+    },
+    // Concatenate all the files in third_party into a single file.
+    concat: {
+      dist: {
+        src: [
+          '../../../out/grunt/third_party/WeakMap.js',
+          '../../../out/grunt/third_party/classlist.js',
+          '../../../out/grunt/third_party/pointerevents-polyfill.js',
+          '../../../out/grunt/third_party/MutationObserver.js',
+          '../../../out/grunt/third_party/CustomElements.js',
+          '../../../out/grunt/third_party/HTMLImports.js',
+        ],
+        dest: '../../../out/grunt/src/<%= pkg.name %>.js'
+      }
+    },
+    // Uglify the one big file into one smaller file.
+    uglify: {
+      options: {
+        banner: '/*! <%= pkg.name %> built from /exerimental/webtry/poly <%= grunt.template.today("yyyy-mm-dd") %> */\n'
+      },
+      build: {
+        src: '../../../out/grunt/src/<%= pkg.name %>.js',
+        dest: '../res/js/<%= pkg.name %>.js'
+      }
+    },
+    copy: {
+      simple: {
+        src: '../../../out/grunt/src/<%= pkg.name %>.js',
+        dest: '../res/js/<%= pkg.name %>.js'
+      }
+    }
+  });
+
+  // Load the plugins for the above commands.
+  grunt.loadNpmTasks('grunt-bower');
+  grunt.loadNpmTasks('grunt-contrib-concat');
+  grunt.loadNpmTasks('grunt-contrib-copy');
+  grunt.loadNpmTasks('grunt-contrib-cssmin');
+  grunt.loadNpmTasks('grunt-contrib-uglify');
+  grunt.loadNpmTasks('grunt-shell');
+
+  // By default run all the commands in the right sequence to build our custom minified polyfill.
+  grunt.registerTask('default', ['shell:bower_install', 'bower', 'concat', 'uglify']);
+
+  // A target to build an unminified version, for debugging.
+  grunt.registerTask('notmin', ['shell:bower_install', 'bower', 'concat', 'copy:simple']);
+
+};