SkRecord: outline methods that are not called O(N) times.

src/core/SkRecord.cpp

+#include "SkRecord.h"
+
+SkRecord::~SkRecord() {
+    Destroyer destroyer;
+    for (unsigned i = 0; i < this->count(); i++) {
+        this->mutate<void>(i, destroyer);
+    }
+}
+
+void SkRecord::grow() {
+    SkASSERT(fCount == fReserved);
+    fReserved = SkTMax<unsigned>(kFirstReserveCount, fReserved*2);
+    fRecords.realloc(fReserved);
+    fTypes.realloc(fReserved);
+}
+
+size_t SkRecord::bytesUsed() const {
+    return fAlloc.approxBytesAllocated() +
+           fReserved * (sizeof(Record) + sizeof(Type8)) +
+           sizeof(SkRecord);
+}