[iOS][Credential-Provider] Add entitlement and plist key

Remove ios/chrome/app/resources/CredentialProvider.entitlements and add
Credential Provider entitlement directly to
ios/chrome/app/resources/Chrome.entitlements

Add UIRequiredDeviceCapabilities plist key to the extension.

Bug: 1106045
Change-Id: I4efe0371788e0a44742419ef2a2432e13a162682
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2302169Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Reviewed-by: Olivier Robin <olivierrobin@chromium.org>
Commit-Queue: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Cr-Commit-Position: refs/heads/master@{#789045}

ios/chrome/app/BUILD.gn

@@ -114,9 +114,6 @@ compile_entitlements("entitlements") {
   if (ios_chrome_entitlements_additions != []) {
     entitlements_templates += ios_chrome_entitlements_additions
   }
-  if (ios_enable_credential_provider_extension) {
-    entitlements_templates += [ "resources/CredentialProvider.entitlements" ]
-  }
   substitutions = [ "IOS_BUNDLE_ID_PREFIX=$ios_app_bundle_id_prefix" ]
   output_name = "$target_gen_dir/$chromium_short_name.entitlements"
 }

ios/chrome/app/resources/Chrome.entitlements

@@ -9,5 +9,7 @@
 		<string>group.${IOS_BUNDLE_ID_PREFIX}.chrome</string>
 		<string>group.${IOS_BUNDLE_ID_PREFIX}.common</string>
 	</array>
+	<key>com.apple.developer.authentication-services.autofill-credential-provider</key>
+	<true/>
 </dict>
 </plist>

ios/chrome/app/resources/CredentialProvider.entitlements

-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>com.apple.developer.authentication-services.autofill-credential-provider</key>
-	<true/>
-</dict>
-</plist>

ios/chrome/credential_provider_extension/Info.plist

@@ -36,5 +36,9 @@
 	</dict>
 	<key>KSChannelChromeScheme</key>
 	<string>${CHROME_CHANNEL_SCHEME}</string>
+	<key>UIRequiredDeviceCapabilities</key>
+	<array>
+		<string>arm64</string>
+	</array>
 </dict>
 </plist>