Change minimum alarm duration to 30 seconds.

https://webkit.org/b/271400
rdar://problem/125181579

Reviewed by Brian Weinstein.

* Source/WebKit/Shared/Extensions/WebExtensionConstants.h: Added webExtensionMinimumAlarmInterval.
* Source/WebKit/WebProcess/Extensions/API/Cocoa/WebExtensionAPIAlarmsCocoa.mm:
(WebKit::WebExtensionAPIAlarms::createAlarm): Use webExtensionMinimumAlarmInterval.

Canonical link: https://commits.webkit.org/276484@main

Source/WebKit/Shared/Extensions/WebExtensionConstants.h

@@ -29,9 +29,12 @@
 
 namespace WebKit {
 
+// MARK: Alarms
+static constexpr auto webExtensionMinimumAlarmInterval = 30_s;
+
 // MARK: Message Passing
 /// This matches the maximum message length enforced by Chromium in its `MessageFromJSONString()` function.
-constexpr size_t webExtensionMaxMessageLength = 1024 * 1024 * 64;
+static constexpr size_t webExtensionMaxMessageLength = 1024 * 1024 * 64;
 
 // MARK: Declarative Net Request
 static constexpr size_t webExtensionDeclarativeNetRequestMaximumNumberOfStaticRulesets = 100;

Source/WebKit/WebProcess/Extensions/API/Cocoa/WebExtensionAPIAlarmsCocoa.mm

@@ -36,6 +36,7 @@
 #import "Logging.h"
 #import "MessageSenderInlines.h"
 #import "WebExtensionAPINamespace.h"
+#import "WebExtensionConstants.h"
 #import "WebExtensionContextMessages.h"
 #import "WebExtensionContextProxy.h"
 #import "WebExtensionUtilities.h"
@@ -109,9 +110,9 @@
     }
 
     if (!extensionContext().inTestingMode()) {
-        // Enforce a minimum of 1 minute intervals outside of testing.
-        initialInterval = std::max(initialInterval, 1_min);
-        repeatInterval = repeatInterval ? std::max(repeatInterval, 1_min) : 0_s;
+        // Enforce a minimum interval outside of testing.
+        initialInterval = std::max(initialInterval, webExtensionMinimumAlarmInterval);
+        repeatInterval = repeatInterval ? std::max(repeatInterval, webExtensionMinimumAlarmInterval) : 0_s;
     }
 
     WebProcess::singleton().send(Messages::WebExtensionContext::AlarmsCreate(name ?: emptyAlarmName, initialInterval, repeatInterval), extensionContext().identifier());