FBTF: Move a bunch of code to the headers and remove includes.

net/base/pem_tokenizer.cc

Index: net/base/pem_tokenizer.cc
diff --git a/net/base/pem_tokenizer.cc b/net/base/pem_tokenizer.cc
index 0abe5dbd5546fe5e5f1339c349b63c67150daecb..6e830588bf58ada253f9ef6199f93663357d58fc 100644
--- a/net/base/pem_tokenizer.cc
+++ b/net/base/pem_tokenizer.cc
@@ -19,12 +19,21 @@ namespace net {
 
 using base::StringPiece;
 
+struct PEMTokenizer::PEMType {
+  std::string type;
+  std::string header;
+  std::string footer;
+};
+
 PEMTokenizer::PEMTokenizer(
     const StringPiece& str,
     const std::vector<std::string>& allowed_block_types) {
   Init(str, allowed_block_types);
 }
 
+PEMTokenizer::~PEMTokenizer() {
+}
+
 bool PEMTokenizer::GetNext() {
   while (pos_ != StringPiece::npos) {
     // Scan for the beginning of the next PEM encoded block.