Chrome provides us the ability to clear ALL cookies - so use it

lib/capybara/selenium/driver.rb

@@ -263,7 +263,7 @@ private
   end
 
   def clear_browser_state
-    @browser.manage.delete_all_cookies
+    delete_all_cookies
     clear_storage
   rescue Selenium::WebDriver::Error::UnhandledError # rubocop:disable Lint/HandleExceptions
     # delete_all_cookies fails when we've previously gone
@@ -271,6 +271,10 @@ private
     # instead.
   end
 
+  def delete_all_cookies
+    @browser.manage.delete_all_cookies
+  end
+
   def clear_storage
     clear_session_storage if options[:clear_session_storage]
     clear_local_storage if options[:clear_local_storage]

lib/capybara/selenium/driver_specializations/chrome_driver.rb

@@ -10,7 +10,6 @@ module Capybara::Selenium::Driver::ChromeDriver
       rescue NoMethodError => err
         raise unless err.message =~ /full_screen_window/
 
-        bridge = browser.send(:bridge)
         result = bridge.http.call(:post, "session/#{bridge.session_id}/window/fullscreen", {})
         result['value']
       end
@@ -39,7 +38,24 @@ module Capybara::Selenium::Driver::ChromeDriver
 
 private
 
+  def delete_all_cookies
+    execute_cdp('Network.clearBrowserCookies')
+  rescue Selenium::WebDriver::Error::UnhandledError, Selenium::WebDriver::Error::WebDriverError
+    # If the CDP clear isn't supported do original limited clear
+    super
+  end
+
+  def execute_cdp(cmd, params = {})
+    args = { cmd: cmd, params: params }
+    result = bridge.http.call(:post, "session/#{bridge.session_id}/goog/cdp/execute", args)
+    result['value']
+  end
+
   def build_node(native_node)
     ::Capybara::Selenium::ChromeNode.new(self, native_node)
   end
+
+  def bridge
+    browser.send(:bridge)
+  end
 end

spec/selenium_spec_chrome.rb

@@ -112,4 +112,22 @@ RSpec.describe 'Capybara::Session with chrome' do
       expect(Time.parse(extract_results(@session)['datetime'])).to eq datetime
     end
   end
+
+  describe '#reset_session!' do
+    it 'removes all cookies' do
+      @session = TestSessions::Chrome
+      domains = ['localhost', '127.0.0.1']
+      domains.each do |domain|
+        @session.visit("http://#{domain}:#{@session.server.port}/set_cookie")
+        @session.visit("http://#{domain}:#{@session.server.port}/get_cookie")
+        expect(@session).to have_content('test_cookie')
+      end
+      @session.reset_session!
+      domains.each do |domain|
+        @session.visit("http://#{domain}:#{@session.server.port}/get_cookie")
+        expect(@session.body).not_to include('test_cookie')
+      end
+    end
+  end
+
 end