feat: introduce page.browserContext() (#3655)

docs/api.md

@@ -96,6 +96,7 @@
   * [page.authenticate(credentials)](#pageauthenticatecredentials)
   * [page.bringToFront()](#pagebringtofront)
   * [page.browser()](#pagebrowser)
+  * [page.browserContext()](#pagebrowsercontext)
   * [page.click(selector[, options])](#pageclickselector-options)
   * [page.close([options])](#pagecloseoptions)
   * [page.content()](#pagecontent)
@@ -1099,6 +1100,12 @@ Brings page to front (activates tab).
 
 Get the browser the page belongs to.
 
+#### page.browserContext()
+
+- returns: <[BrowserContext]>
+
+Get the browser context that the page belongs to.
+
 #### page.click(selector[, options])
 - `selector` <[string]> A [selector] to search for element to click. If there are multiple elements satisfying the selector, the first will be clicked.
 - `options` <[Object]>

lib/Page.js

@@ -172,6 +172,13 @@ class Page extends EventEmitter {
     return this._target.browser();
   }
 
+  /**
+   * @return {!Puppeteer.BrowserContext}
+   */
+  browserContext() {
+    return this._target.browserContext();
+  }
+
   _onTargetCrashed() {
     this.emit('error', new Error('Page crashed!'));
   }

test/page.spec.js

@@ -918,4 +918,10 @@ module.exports.addTests = function({testRunner, expect, headless}) {
       expect(page.browser()).toBe(browser);
     });
   });
+
+  describe('Page.browserContext', function() {
+    it('should return the correct browser instance', async function({page, context, browser}) {
+      expect(page.browserContext()).toBe(context);
+    });
+  });
 };