SkAdvancedTypefaceMetrics zeroing constructor

src/core/SkAdvancedTypefaceMetrics.h

Index: src/core/SkAdvancedTypefaceMetrics.h
diff --git a/src/core/SkAdvancedTypefaceMetrics.h b/src/core/SkAdvancedTypefaceMetrics.h
index 37434a3912d63095a5456e9827e3af29240b3fd2..44a6854bd5eda081ff7d09a7e5fd9cacf497af1c 100644
--- a/src/core/SkAdvancedTypefaceMetrics.h
+++ b/src/core/SkAdvancedTypefaceMetrics.h
@@ -25,7 +25,19 @@
 
 class SkAdvancedTypefaceMetrics : public SkRefCnt {
 public:
-    
+
+    SkAdvancedTypefaceMetrics()
+        : fType(SkAdvancedTypefaceMetrics::kOther_Font)
+        , fFlags(SkAdvancedTypefaceMetrics::kEmpty_FontFlag)
+        , fLastGlyphID(0)
+        , fEmSize(0)
+        , fStyle(0)
+        , fItalicAngle(0)
+        , fAscent(0)
+        , fDescent(0)
+        , fStemV(0)
+        , fCapHeight(0)
+        , fBBox(SkIRect::MakeEmpty()) {}
 
     SkString fFontName;