ProcessThrottler.cpp: error: format specifies type 'unsigned int' but…

… the argument has type 'ProcessAssertionType' [-Werror,-Wformat]

https://bugs.webkit.org/show_bug.cgi?id=259314
<rdar://111551983>

Reviewed by Chris Dumez.

* Source/WebKit/UIProcess/ProcessAssertion.h:
(WebKit::ProcessAssertionType): Make enum class use uint8_t.

* Source/WebKit/UIProcess/ProcessThrottler.cpp:
(WebKit::ProcessThrottler::setThrottleState):
- Use WTF::enumToUnderlyingType() to convert the enum value to its
  underlying type for logging to fix the compiler error.

Canonical link: https://commits.webkit.org/266142@main

Source/WebKit/UIProcess/ProcessAssertion.h

@@ -44,7 +44,7 @@ OBJC_CLASS WKRBSAssertionDelegate;
 
 namespace WebKit {
 
-enum class ProcessAssertionType {
+enum class ProcessAssertionType : uint8_t {
     NearSuspended,
     Background,
     UnboundedNetworking,

Source/WebKit/UIProcess/ProcessThrottler.cpp

@@ -30,6 +30,7 @@
 #include "ProcessThrottlerClient.h"
 #include <optional>
 #include <wtf/CompletionHandler.h>
+#include <wtf/EnumTraits.h>
 #include <wtf/text/TextStream.h>
 
 #if PLATFORM(COCOA)
@@ -183,7 +184,7 @@ void ProcessThrottler::setThrottleState(ProcessThrottleState newState)
     if (m_assertion && m_assertion->isValid() && m_assertion->type() == newType)
         return;
 
-    PROCESSTHROTTLER_RELEASE_LOG("setThrottleState: Updating process assertion type to %u (foregroundActivities=%u, backgroundActivities=%u)", newType, m_foregroundActivities.size(), m_backgroundActivities.size());
+    PROCESSTHROTTLER_RELEASE_LOG("setThrottleState: Updating process assertion type to %u (foregroundActivities=%u, backgroundActivities=%u)", WTF::enumToUnderlyingType(newType), m_foregroundActivities.size(), m_backgroundActivities.size());
 
     // Keep the previous assertion active until the new assertion is taken asynchronously.
     auto previousAssertion = std::exchange(m_assertion, nullptr);