Remove browser.closePage. (#124)

Remove browser.closePage. Closes #116

docs/api.md

@@ -9,7 +9,6 @@
   * [class: Browser](#class-browser)
     + [new Browser([options])](#new-browseroptions)
     + [browser.close()](#browserclose)
-    + [browser.closePage(page)](#browserclosepagepage)
     + [browser.newPage()](#browsernewpage)
     + [browser.stderr](#browserstderr)
     + [browser.stdout](#browserstdout)
@@ -197,12 +196,6 @@ browser.newPage().then(async page => {
 
 Closes browser with all the pages (if any were opened). The browser object itself is considered to be disposed and could not be used anymore.
 
-#### browser.closePage(page)
-- `page` <[Page]> A page to be closed.
-- returns: <[Promise]> Promise which resolves when the page is closed.
-
-This is an alias for the `page.close()` method.
-
 #### browser.newPage()
 - returns: <[Promise]<[Page]>> Promise which resolves to a new [Page] object.
 

lib/Browser.js

@@ -95,15 +95,6 @@ class Browser {
     return page;
   }
 
-  /**
-     * @param {!Page} page
-     */
-  async closePage(page) {
-    if (!this._chromeProcess || this._terminated)
-      throw new Error('ERROR: this chrome instance is not running');
-    await page.close();
-  }
-
   /**
    * @return {string}
    */