Read content_scripts to preferences

lib/browser/chrome-extension.js

@@ -1,4 +1,6 @@
 const {app, protocol, webContents, BrowserWindow} = require('electron')
+const renderProcessPreferences = process.atomBinding('render_process_preferences').forAllBrowserWindow()
+
 const fs = require('fs')
 const path = require('path')
 const url = require('url')
@@ -67,6 +69,34 @@ const startBackgroundPages = function (manifest) {
   }))
 }
 
+// Transfer the content scripts to renderer.
+const contentScripts = {}
+
+const injectContentScripts = function (manifest) {
+  if (contentScripts[manifest.name] || !manifest.content_scripts) return
+
+  const readArrayOfFiles = function (relativePath) {
+    return fs.readFileSync(path.join(manifest.srcDirectory, relativePath))
+  }
+
+  const contentScriptToEntry = function (script) {
+    return {
+      matches: script.matches,
+      js: script.js.map(readArrayOfFiles),
+      run_at: script.run_at || 'document_idle'
+    }
+  }
+
+  try {
+    const entry = {
+      contentScripts: manifest.content_scripts.map(contentScriptToEntry)
+    }
+    contentScripts[manifest.name] = renderProcessPreferences.addEntry(entry)
+  } catch (e) {
+    console.error('Failed to read content scripts', e)
+  }
+}
+
 // Transfer the |manifest| to a format that can be recognized by the
 // |DevToolsAPI.addExtensions|.
 const manifestToExtensionInfo = function (manifest) {
@@ -84,6 +114,7 @@ const loadDevToolsExtensions = function (win, manifests) {
 
   for (const manifest of manifests) {
     startBackgroundPages(manifest)
+    injectContentScripts(manifest)
   }
   const extensionInfoArray = manifests.map(manifestToExtensionInfo)
   win.devToolsWebContents.executeJavaScript(`DevToolsAPI.addExtensions(${JSON.stringify(extensionInfoArray)})`)