Add browser module page.throttleCPU documentation

Author: ankur22

docs/sources/next/javascript-api/k6-experimental/browser/page/_index.md

@@ -57,6 +57,7 @@ Page provides methods to interact with a single tab in a running web browser. A
 | [page.setViewportSize(viewportSize)](https://grafana.com/docs/k6/<K6_VERSION>/javascript-api/k6-experimental/browser/page/setviewportsize)                    | Updates the `page`'s width and height.                                                                                                                                                                                                                                                                                                                                                                     |
 | [page.tap(selector[, options])](https://grafana.com/docs/k6/<K6_VERSION>/javascript-api/k6-experimental/browser/page/tap/)                                                             | Taps the first element that matches the `selector`.                                                                                                                                                                                                                                                                                                                                                        |
 | [page.textContent(selector[, options])](https://grafana.com/docs/k6/<K6_VERSION>/javascript-api/k6-experimental/browser/page/textcontent/)                                             | Returns the `element.textContent`.                                                                                                                                                                                                                                                                                                                                                                         |
+| [page.throttleCPU(cpuProfile)](https://grafana.com/docs/k6/<K6_VERSION>/javascript-api/k6-experimental/browser/page/throttlecpu)                              | Throttles the CPU in Chrome/Chromium to slow it down by the specified `rate` in the `cpuProfile` object. |
 | [page.title()](https://grafana.com/docs/k6/<K6_VERSION>/javascript-api/k6-experimental/browser/page/title)                                                    | Returns the `page`'s title.                                                                                                                                                                                                                                                                                                                                                                                |
 | [page.type(selector, text[, options])](https://grafana.com/docs/k6/<K6_VERSION>/javascript-api/k6-experimental/browser/page/type/)                                                     | Types the `text` in the first element found that matches the `selector`.                                                                                                                                                                                                                                                                                                                                   |
 | [page.touchScreen](https://grafana.com/docs/k6/<K6_VERSION>/javascript-api/k6-experimental/browser/page/touchscreen)                                          | Returns the [Touchscreen](https://grafana.com/docs/k6/<K6_VERSION>/javascript-api/k6-experimental/browser/touchscreen) instance to interact with a virtual touchscreen on the page.                                                                                                                                                                                                                                        |

docs/sources/next/javascript-api/k6-experimental/browser/page/throttlecpu.md

@@ -0,0 +1,49 @@
+---
+title: 'throttleCPU(cpuProfile)'
+excerpt: 'Browser module: page.throttleCPU(cpuProfile) method'
+---
+
+# throttleCPU(cpuProfile)
+
+Throttles the CPU in Chrome/Chromium to slow it down by the specified `rate` in `cpuProfile`.
+
+| Parameter       | Type       | Default | Description                                                          |
+|-----------------|------------|---------|----------------------------------------------------------------------|
+| cpuProfile      | CPUProfile | `null`  | This is a mandatory parameter.                                       |
+| cpuProfile.rate | number     | `1`     | rate as a slowdown factor (1 is no throttle, 2 is 2x slowdown, etc). |
+
+### Example
+
+{{< code >}}
+
+```javascript
+import { browser } from 'k6/experimental/browser';
+
+export const options = {
+  scenarios: {
+    browser: {
+      executor: 'shared-iterations',
+      options: {
+        browser: {
+          type: 'chromium',
+        },
+      },
+    },
+  },
+};
+
+export default async function () {
+  const context = browser.newContext();
+  const page = context.newPage();
+
+  try {
+    page.throttleCPU({ rate: 4 });
+
+    await page.goto('https://test.k6.io/', { waitUntil: 'networkidle' });
+  } finally {
+    page.close();
+  }
+}
+```
+
+{{< /code >}}