refactor: use v8 serialization for ipc (#20214)

* refactor: use v8 serialization for ipc

* cloning process.env doesn't work

* serialize host objects by enumerating key/values

* new serialization can handle NaN, Infinity, and undefined correctly

* can't allocate v8 objects during GC

* backport microtasks fix

* fix compile

* fix node_stream_loader reentrancy

* update subframe spec to expect undefined instead of null

* write undefined instead of crashing when serializing host objects

* fix webview spec

* fix download spec

* buffers are transformed into uint8arrays

* can't serialize promises

* fix chrome.i18n.getMessage

* fix devtools tests

* fix zoom test

* fix debug build

* fix lint

* update ipcRenderer tests

* fix printToPDF test

* update patch

* remove accidentally re-added remote-side spec

* wip

* don't attempt to serialize host objects

* jump through different hoops to set options.webContents sometimes

* whoops

* fix lint

* clean up error-handling logic

* fix memory leak

* fix lint

* convert host objects using old base::Value serialization

* fix lint more

* fall back to base::Value-based serialization

* remove commented-out code

* add docs to breaking-changes.md

* Update breaking-changes.md

* update ipcRenderer and WebContents docs

* lint

* use named values for format tag

* save a memcpy for ~30% speedup

* get rid of calls to ShallowClone

* extra debugging for paranoia

* d'oh, use the correct named tags

* apparently msstl doesn't like this DCHECK

* funny story about that DCHECK

* disable remote-related functions when enable_remote_module = false

* nits

* use EnableIf to disable remote methods in mojom

* fix include

* review comments

spec/api-remote-spec.js

@@ -241,14 +241,14 @@ ifdescribe(features.isRemoteModuleEnabled())('remote module', () => {
     const print = path.join(fixtures, 'module', 'print_name.js')
     const printName = remote.require(print)
 
-    it('converts NaN to undefined', () => {
-      expect(printName.getNaN()).to.be.undefined()
-      expect(printName.echo(NaN)).to.be.undefined()
+    it('preserves NaN', () => {
+      expect(printName.getNaN()).to.be.NaN()
+      expect(printName.echo(NaN)).to.be.NaN()
     })
 
-    it('converts Infinity to undefined', () => {
-      expect(printName.getInfinity()).to.be.undefined()
-      expect(printName.echo(Infinity)).to.be.undefined()
+    it('preserves Infinity', () => {
+      expect(printName.getInfinity()).to.equal(Infinity)
+      expect(printName.echo(Infinity)).to.equal(Infinity)
     })
 
     it('keeps its constructor name for objects', () => {

spec/fixtures/module/preload-sandbox.js

@@ -28,7 +28,7 @@
         creationTime: invoke(() => process.getCreationTime()),
         heapStatistics: invoke(() => process.getHeapStatistics()),
         blinkMemoryInfo: invoke(() => process.getBlinkMemoryInfo()),
-        processMemoryInfo: invoke(() => process.getProcessMemoryInfo()),
+        processMemoryInfo: invoke(() => process.getProcessMemoryInfo() ? {} : null),
         systemMemoryInfo: invoke(() => process.getSystemMemoryInfo()),
         systemVersion: invoke(() => process.getSystemVersion()),
         cpuUsage: invoke(() => process.getCPUUsage()),

spec/fixtures/pages/webview-in-page-navigate.html

@@ -19,7 +19,7 @@
     SendZoomLevel().then(() => {
       if (!finalNavigation) {
         finalNavigation = true
-        view.executeJavaScript('window.location.hash=123', () => {})
+        view.executeJavaScript('window.location.hash=123')
       }
     })
   })

spec/webview-spec.js

@@ -1068,7 +1068,7 @@ describe('<webview> tag', function () {
       await loadWebView(webview, { src })
 
       const data = await webview.printToPDF({})
-      expect(data).to.be.an.instanceof(Buffer).that.is.not.empty()
+      expect(data).to.be.an.instanceof(Uint8Array).that.is.not.empty()
     })
   })