DevTools: Add CSS.getPlatformFontsForNode in protocol.json

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 8f607010d9db1d2f5ea6019d9bd7f2677e704fd6..ea7b7bb51c15de5d94fb11e9ce4f65abf35f0b65 100644
--- a/Source/core/inspector/InspectorCSSAgent.h
+++ b/Source/core/inspector/InspectorCSSAgent.h
@@ -54,6 +54,7 @@ class InstrumentingAgents;
 class MediaList;
 class Node;
 class NodeList;
+class PlatformFontUsage;
 class StyleResolver;
 class UpdateRegionLayoutTask;
 
@@ -125,6 +126,7 @@ public:
     void frameDetachedFromParent(Frame*);
 
     virtual void getComputedStyleForNode(ErrorString*, int nodeId, RefPtr<TypeBuilder::Array<TypeBuilder::CSS::CSSComputedStyleProperty> >&);
+    virtual void getPlatformFontsForNode(ErrorString*, int, RefPtr<TypeBuilder::Array<TypeBuilder::CSS::PlatformFontUsage> >&);
     virtual void getInlineStylesForNode(ErrorString*, int nodeId, RefPtr<TypeBuilder::CSS::CSSStyle>& inlineStyle, RefPtr<TypeBuilder::CSS::CSSStyle>& attributes);
     virtual void getMatchedStylesForNode(ErrorString*, int nodeId, const bool* includePseudo, const bool* includeInherited, RefPtr<TypeBuilder::Array<TypeBuilder::CSS::RuleMatch> >& matchedCSSRules, RefPtr<TypeBuilder::Array<TypeBuilder::CSS::PseudoIdMatches> >& pseudoIdMatches, RefPtr<TypeBuilder::Array<TypeBuilder::CSS::InheritedStyleEntry> >& inheritedEntries);
     virtual void getAllStyleSheets(ErrorString*, RefPtr<TypeBuilder::Array<TypeBuilder::CSS::CSSStyleSheetHeader> >& styleSheetInfos);
@@ -166,6 +168,8 @@ private:
     void collectAllStyleSheets(Vector<InspectorStyleSheet*>&);
     void collectStyleSheets(CSSStyleSheet*, Vector<InspectorStyleSheet*>&);
 
+    void collectPlatformFontsForRenderer(RenderText*, HashMap<String, int>*);
+
     InspectorStyleSheet* bindStyleSheet(CSSStyleSheet*);
     String unbindStyleSheet(InspectorStyleSheet*);
     InspectorStyleSheet* viaInspectorStyleSheet(Document*, bool createIfAbsent);