Rename widget to search widget and use new bundleid to always build.

docs/ios/build_instructions.md

 # Checking out and building Chromium for iOS
 
 There are instructions for other platforms linked from the
 [get the code](../get_the_code.md) page.
 
 ## Instructions for Google Employees
 
 Are you a Google employee? See
 [go/building-chrome](https://goto.google.com/building-chrome) instead.
 
@@ skipping 124 matching lines @@
 `ios_app_bundle_id_prefix` and usually corresponds to a reversed domain name
 (the default value is `"org.chromium"`).
 
 You then need to request provisioning profiles from Apple for your devices
 for the following bundle identifiers to build and run Chromium with these
 application extensions:
 
 -   `${prefix}.chrome.ios.herebedragons`
 -   `${prefix}.chrome.ios.herebedragons.ShareExtension`
 -   `${prefix}.chrome.ios.herebedragons.TodayExtension`
+-   `${prefix}.chrome.ios.herebedragons.SearchTodayExtension`
 
 All these certificates need to have the "App Groups"
 (`com.apple.security.application-groups`) capability enabled for
 the following groups:
 
 -   `group.${prefix}.chrome`
 -   `group.${prefix}.common`
 
 The `group.${prefix}.chrome` is only shared by Chromium and its extensions
 to share files and configurations while the `group.${prefix}.common` is shared
@@ skipping 149 matching lines @@
 
 ```shell
 $ xcodebuild -license
 ```
 
 Only accepting for all users of the machine requires root:
 
 ```shell
 $ sudo xcodebuild -license
 ```