SkPDF: Remove unused deprecated functions in SkPDFTypes

depends on:
    http://crrev.com/1107923002
    http://crrev.com/1103163002
    http://crrev.com/1110533002
    http://crrev.com/1107913002
    http://crrev.com/1106163002

BUG=skia:3585

Review URL: https://codereview.chromium.org/1113583002
diff --git a/src/pdf/SkPDFTypes.cpp b/src/pdf/SkPDFTypes.cpp
index 11f4310..ba5d6e2 100644
--- a/src/pdf/SkPDFTypes.cpp
+++ b/src/pdf/SkPDFTypes.cpp
@@ -270,6 +270,7 @@
 
 ////////////////////////////////////////////////////////////////////////////////
 
+#if 0  // Enable if needed.
 void SkPDFAtom::emitObject(SkWStream* stream,
                            const SkPDFObjNumMap& objNumMap,
                            const SkPDFSubstituteMap& substitutes) {
@@ -279,7 +280,7 @@
                              const SkPDFSubstituteMap& substitutes) const {
     fValue.addResources(map, substitutes);
 }
-
+#endif  // 0
 ////////////////////////////////////////////////////////////////////////////////
 
 // static
@@ -416,12 +417,6 @@
     SkNEW_PLACEMENT_ARGS(fValues.append(), SkPDFUnion, (value.move()));
 }
 
-SkPDFObject* SkPDFArray::append(SkPDFObject* value) {
-    // DEPRECATED
-    this->append(SkPDFUnion::Object(SkRef(value)));
-    return value;
-}
-
 void SkPDFArray::appendInt(int32_t value) {
     this->append(SkPDFUnion::Int(value));
 }
@@ -512,12 +507,6 @@
     this->set(SkPDFUnion::Name(key), SkPDFUnion::Object(value));
 }
 
-// DEPRECATED
-SkPDFObject* SkPDFDict::insert(const char key[], SkPDFObject* value) {
-    this->set(SkPDFUnion::Name(key), SkPDFUnion::Object(SkRef(value)));
-    return value;
-}
-
 void SkPDFDict::insertBool(const char key[], bool value) {
     this->set(SkPDFUnion::Name(key), SkPDFUnion::Bool(value));
 }