PDF: Canon now owns a reference to all interned objects

src/pdf/SkPDFFontImpl.h

Index: src/pdf/SkPDFFontImpl.h
diff --git a/src/pdf/SkPDFFontImpl.h b/src/pdf/SkPDFFontImpl.h
index 4c3e525985c55e8b95df49e9b69c0d71ccd238cd..a0689a338e7f728f72171737415e3927c0479898 100644
--- a/src/pdf/SkPDFFontImpl.h
+++ b/src/pdf/SkPDFFontImpl.h
@@ -28,8 +28,7 @@ private:
     typedef SkPDFDict INHERITED;
 #endif
 
-    SkPDFType0Font(SkPDFCanon* canon,
-                   const SkAdvancedTypefaceMetrics* info,
+    SkPDFType0Font(const SkAdvancedTypefaceMetrics* info,
                    SkTypeface* typeface);
 
     bool populate(const SkPDFGlyphSet* subset);
@@ -43,8 +42,7 @@ public:
 private:
     friend class SkPDFType0Font;  // to access the constructor
 
-    SkPDFCIDFont(SkPDFCanon* canon,
-                 const SkAdvancedTypefaceMetrics* info,
+    SkPDFCIDFont(const SkAdvancedTypefaceMetrics* info,
                  SkTypeface* typeface,
                  const SkPDFGlyphSet* subset);
 
@@ -61,8 +59,7 @@ public:
 private:
     friend class SkPDFFont;  // to access the constructor
 
-    SkPDFType1Font(SkPDFCanon* canon,
-                   const SkAdvancedTypefaceMetrics* info,
+    SkPDFType1Font(const SkAdvancedTypefaceMetrics* info,
                    SkTypeface* typeface,
                    uint16_t glyphID,
                    SkPDFDict* relatedFontDescriptor);
@@ -81,8 +78,7 @@ public:
 private:
     friend class SkPDFFont;  // to access the constructor
 
-    SkPDFType3Font(SkPDFCanon* canon,
-                   const SkAdvancedTypefaceMetrics* info,
+    SkPDFType3Font(const SkAdvancedTypefaceMetrics* info,
                    SkTypeface* typeface,
                    uint16_t glyphID);