DevTools: generalize getPlatformFonts code

Source/core/inspector/InspectorCSSAgent.h

Index: Source/core/inspector/InspectorCSSAgent.h
diff --git a/Source/core/inspector/InspectorCSSAgent.h b/Source/core/inspector/InspectorCSSAgent.h
index 19cbd5bfe378c687ca16c7a4a3536fc47f45ddda..cefd6add689502ef42bf6503af7b3aa27d4d73d7 100644
--- a/Source/core/inspector/InspectorCSSAgent.h
+++ b/Source/core/inspector/InspectorCSSAgent.h
@@ -53,7 +53,7 @@ class InspectorFrontend;
 class InspectorResourceAgent;
 class MediaList;
 class Node;
-class LayoutText;
+class LayoutObject;
 
 class CORE_EXPORT InspectorCSSAgent final
     : public InspectorBaseAgent<InspectorCSSAgent, InspectorFrontend::CSS>
@@ -172,7 +172,7 @@ private:
     void updateActiveStyleSheets(Document*, StyleSheetsUpdateType);
     void setActiveStyleSheets(Document*, const WillBeHeapVector<RawPtrWillBeMember<CSSStyleSheet> >&, StyleSheetsUpdateType);
 
-    void collectPlatformFontsForLayoutObject(LayoutText*, HashCountedSet<String>*);
+    void collectPlatformFontsForLayoutObject(LayoutObject*, HashCountedSet<String>*);
 
     InspectorStyleSheet* bindStyleSheet(CSSStyleSheet*);
     String unbindStyleSheet(InspectorStyleSheet*);