FontLoadHistograms: classify as memory cache hit if FontResource loading not triggered

third_party/WebKit/Source/core/css/RemoteFontFaceSource.h

Index: third_party/WebKit/Source/core/css/RemoteFontFaceSource.h
diff --git a/third_party/WebKit/Source/core/css/RemoteFontFaceSource.h b/third_party/WebKit/Source/core/css/RemoteFontFaceSource.h
index 9bd6946fa80a57ec6af840e1424520f7fbcdeba2..748c9e94360aae521c44401950659f57818b4e28 100644
--- a/third_party/WebKit/Source/core/css/RemoteFontFaceSource.h
+++ b/third_party/WebKit/Source/core/css/RemoteFontFaceSource.h
@@ -75,6 +75,7 @@ private:
         bool hadBlankText() { return m_blankPaintTime; }
         DataSource dataSource() { return m_dataSource; }
         void maySetDataSource(DataSource dataSource) { m_dataSource = (m_dataSource != FromUnknown) ? m_dataSource : dataSource; }
+        bool isLoadStartedCalled() const { return m_loadStartTime != 0; }
     private:
         void recordLoadTimeHistogram(const FontResource*, int duration);
         void recordInterventionResult(bool isTriggered);