✨ Add bitness to User Agent Client Hint Params in ad requests (#35612)

* Add User Agent Client Hint Params to Google Ads.

* Update the param names.

* Add timeout for UACH promise (1 second).

* Use fake timers for timeout test.

* Lint

* Add exception for dependency on promise.js.

* Add bitness field to User Agent Client Hints params

* Fix merge

* Fix merge again

* Lint

ads/google/a4a/test/test-utils.js

@@ -649,13 +649,14 @@ describes.sandboxed('Google A4A utils', {}, (env) => {
                 architecture: 'x86',
                 model: 'Pixel',
                 uaFullVersion: 3.14159,
+                bitness: 42,
               }),
           },
         });
         return fixture.addElement(elem).then(() => {
           return googleAdUrl(impl, '', Date.now(), [], []).then((url) => {
             expect(url).to.match(
-              /[&?]uap=Windows&uapv=10&uaa=x86&uam=Pixel&uafv=3.14159[&$]/
+              /[&?]uap=Windows&uapv=10&uaa=x86&uam=Pixel&uafv=3.14159&uab=42[&$]/
             );
           });
         });
@@ -684,7 +685,7 @@ describes.sandboxed('Google A4A utils', {}, (env) => {
           const promise = googleAdUrl(impl, '', Date.now(), [], []).then(
             (url) => {
               expect(url).to.not.match(
-                /[&?]uap=Windows&uapv=10&uaa=x86&uam=Pixel&uafv=3.14159[&$]/
+                /[&?]uap=Windows&uapv=10&uaa=x86&uam=Pixel&uafv=3.14159&uab=42[&$]/
               );
             }
           );

ads/google/a4a/utils.js

@@ -373,6 +373,7 @@ export function googlePageParameters(a4a, startTime) {
       'uaa': uaDataValues?.architecture,
       'uam': uaDataValues?.model,
       'uafv': uaDataValues?.uaFullVersion,
+      'uab': uaDataValues?.bitness,
     };
   });
 }
@@ -1198,5 +1199,6 @@ function getUserAgentClientHintParameters(win) {
     'architecture',
     'model',
     'uaFullVersion',
+    'bitness',
   ]);
 }