Fix rebase

Author: sbuggay

config/gni/devtools_grd_files.gni

@@ -237,7 +237,6 @@ grd_files_release_sources = [
   "front_end/Images/psychiatry.svg",
   "front_end/Images/react_native/learn-debugging-basics.jpg",
   "front_end/Images/react_native/learn-native-debugging.jpg",
-  "front_end/Images/react_native/whats-new-083.jpg",
   "front_end/Images/react_native/learn-react-native-devtools.jpg",
   "front_end/Images/react_native/welcomeIcon.png",
   "front_end/Images/record-start.svg",

config/gni/devtools_image_files.gni

@@ -18,7 +18,6 @@ devtools_image_files = [
   "popoverArrows.png",
   "react_native/learn-debugging-basics.jpg",
   "react_native/learn-native-debugging.jpg",
-  "react_native/whats-new-083.jpg",
   "react_native/learn-react-native-devtools.jpg",
   "react_native/welcomeIcon.png",
   "toolbarResizerVertical.png",

front_end/Images/react_native/whats-new-083.jpg

@@ -106,6 +106,9 @@ export class UISourceCodeFrame extends
 
         fetch('/open-stack-frame', {
           method: 'POST',
+          headers: {
+            'Content-Type': 'application/json',
+          },
           body: JSON.stringify(body),
         }).catch(e => console.error(e));
       });

front_end/panels/sources/UISourceCodeFrame.ts

@@ -2434,6 +2434,7 @@ export const knownContextValues = new Set([
   'network-conditions.network-mid-tier-mobile',
   'network-conditions.network-offline',
   'network-conditions.network-online',
+  'network-event-coverage-infobar',
   'network-event-source-message-filter',
   'network-film-strip',
   'network-hide-chrome-extensions',