diff --git a/lighthouse-core/gather/gatherers/seo/font-size.js b/lighthouse-core/gather/gatherers/seo/font-size.js
index a12c4fb6c5f7..8947a6de2ebf 100644
--- a/lighthouse-core/gather/gatherers/seo/font-size.js
+++ b/lighthouse-core/gather/gatherers/seo/font-size.js
@@ -91,7 +91,7 @@ function getEffectiveRule(property, node, {
   const matchingRule = nodeStyles
     .find(style =>
       // the applicable property will be the only one that isn't in the "overloaded" state.
-      style.allProperties.some(item => item.name === property &&
+      style.allProperties().some(item => item.name === property &&
         matchedStyles.propertyState(item) !== CSSMatchedStyles.PropertyState.Overloaded)
     );
 
diff --git a/lighthouse-core/lib/web-inspector.js b/lighthouse-core/lib/web-inspector.js
index b9817cf58c79..294c1c060b34 100644
--- a/lighthouse-core/lib/web-inspector.js
+++ b/lighthouse-core/lib/web-inspector.js
@@ -7,48 +7,49 @@
 'use strict';
 
 /**
- * Stubbery to allow portions of the DevTools frontend to be used in lighthouse. `WebInspector`
+ * Stubbery to allow portions of the DevTools frontend to be used in lighthouse. `SDK`
  * technically lives on the global object but should be accessed through a normal `require` call.
  */
 module.exports = (function() {
-  if (global.WebInspector) {
-    return global.WebInspector;
-  }
-
-  // Global pollution.
-  // Check below is to make it worker-friendly where global is worker's self.
-  if (global.self !== global) {
-    global.self = global;
+  if (global.SDK) {
+    return global.SDK;
   }
 
+  // Dependencies for effective CSS rule calculation. Global pollution!
+  global.SDK = {};
+  global.TextUtils = {};
   global.Node = {
     ELEMENT_NODE: 1,
     TEXT_NODE: 3,
   };
-
-  global.CSSAgent = {};
-  global.CSSAgent.StyleSheetOrigin = {
-    Injected: 'injected',
-    UserAgent: 'user-agent',
-    Inspector: 'inspector',
-    Regular: 'regular',
+  global.Protocol = {
+    CSS: {
+      StyleSheetOrigin: {
+        Injected: 'injected',
+        UserAgent: 'user-agent',
+        Inspector: 'inspector',
+        Regular: 'regular',
+      },
+    },
   };
 
-  global.CSS = {};
-  global.CSS.supports = () => true;
-
-  // Stash the real one so we can reinstall after DT incorrectly polyfills.
-  // See https://github.com/GoogleChrome/lighthouse/issues/73
-  const _setImmediate = global.setImmediate;
-
-  global.WebInspector = {};
-  const WebInspector = global.WebInspector;
-
-  // Shared Dependencies
-  require('chrome-devtools-frontend/front_end/platform/utilities.js');
+  /**
+   * The single prototype augmentation needed from 'chrome-devtools-frontend/front_end/platform/utilities.js'.
+   * @return {Array<number>}
+   */
+  String.prototype.computeLineEndings = function() { // eslint-disable-line no-extend-native
+    const endings = [];
+    for (let i = 0; i < this.length; i++) {
+      if (this.charAt(i) === '\n') {
+        endings.push(i);
+      }
+    }
+    endings.push(this.length);
+    return endings;
+  };
 
-  // Dependencies for effective CSS rule calculation.
-  require('chrome-devtools-frontend/front_end/common/TextRange.js');
+  require('chrome-devtools-frontend/front_end/text_utils/Text.js');
+  require('chrome-devtools-frontend/front_end/text_utils/TextRange.js');
   require('chrome-devtools-frontend/front_end/sdk/CSSMatchedStyles.js');
   require('chrome-devtools-frontend/front_end/sdk/CSSMedia.js');
   require('chrome-devtools-frontend/front_end/sdk/CSSMetadata.js');
@@ -56,15 +57,5 @@ module.exports = (function() {
   require('chrome-devtools-frontend/front_end/sdk/CSSRule.js');
   require('chrome-devtools-frontend/front_end/sdk/CSSStyleDeclaration.js');
 
-  WebInspector.CSSMetadata._generatedProperties = [
-    {
-      name: 'font-size',
-      inherited: true,
-    },
-  ];
-
-  // Restore setImmediate, see comment at top.
-  global.setImmediate = _setImmediate;
-
-  return WebInspector;
+  return global.SDK;
 })();
diff --git a/package.json b/package.json
index 76574c69cd05..2f6046e9096f 100644
--- a/package.json
+++ b/package.json
@@ -112,7 +112,7 @@
   },
   "dependencies": {
     "axe-core": "3.0.0-beta.2",
-    "chrome-devtools-frontend": "1.0.422034",
+    "chrome-devtools-frontend": "1.0.593291",
     "chrome-launcher": "^0.10.4",
     "configstore": "^3.1.1",
     "cssstyle": "1.1.1",
diff --git a/yarn.lock b/yarn.lock
index 836946eac601..815d7cc94433 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1029,9 +1029,9 @@ chrome-devtools-frontend@1.0.401423:
   version "1.0.401423"
   resolved "https://registry.yarnpkg.com/chrome-devtools-frontend/-/chrome-devtools-frontend-1.0.401423.tgz#32a89b8d04e378a494be3c8d63271703be1c04ea"
 
-chrome-devtools-frontend@1.0.422034:
-  version "1.0.422034"
-  resolved "https://registry.yarnpkg.com/chrome-devtools-frontend/-/chrome-devtools-frontend-1.0.422034.tgz#071c8ce14466b7653032fcd1ad1a4a68d5e3cbd9"
+chrome-devtools-frontend@1.0.593291:
+  version "1.0.593291"
+  resolved "https://registry.yarnpkg.com/chrome-devtools-frontend/-/chrome-devtools-frontend-1.0.593291.tgz#72ed2e488e4ab8c5df9f35a5ce6bb128eb3c5e74"
 
 chrome-launcher@^0.10.4:
   version "0.10.4"