Remove 'process' usage

Summary: Removed process, adbkit and electron usages that were still remaining. Verified changes by disabling the built-in module stubbing (will be cleaned up further later in this stack).

Reviewed By: aigoncharov

Differential Revision: D33019083

fbshipit-source-id: 8bfce31f4b5ed349cb4fd86d34c9b41b9b8b8360

desktop/flipper-ui-core/src/RenderHost.tsx

@@ -104,6 +104,7 @@ export interface RenderHost {
   // given the requested icon and proposed public url of the icon, rewrite it to a local icon if needed
   getLocalIconUrl?(icon: Icon, publicUrl: string): string;
   unloadModule?(path: string): void;
+  getPercentCPUUsage?(): number;
 }
 
 export function getRenderHostInstance(): RenderHost {

desktop/flipper-ui-core/src/dispatcher/tracking.tsx

@@ -24,7 +24,6 @@ import {
 import produce from 'immer';
 import BaseDevice from '../devices/BaseDevice';
 import {deconstructClientId} from 'flipper-common';
-import {getCPUUsage} from 'process';
 import {sideEffect} from '../utils/sideEffect';
 import {getSelectionInfo} from '../utils/info';
 import type {SelectionInfo} from '../utils/info';
@@ -239,7 +238,7 @@ export default (store: Store, logger: Logger) => {
       sdkVersion,
       isForeground: state.application.windowIsFocused,
       usedJSHeapSize: (window.performance as any).memory.usedJSHeapSize,
-      cpuLoad: getCPUUsage().percentCPUUsage,
+      cpuLoad: renderHost.getPercentCPUUsage?.() ?? 0,
     };
 
     // reset dropped frames counter