Abstracts SHA256 context for NSS / OpenSSL.

chrome/browser/download/base_file.cc

Index: chrome/browser/download/base_file.cc
diff --git a/chrome/browser/download/base_file.cc b/chrome/browser/download/base_file.cc
index 4085f601df06db49ae89328452e2857960082601..3bf1987b62f7d5d52fdcfb280f722fdf440b503f 100644
--- a/chrome/browser/download/base_file.cc
+++ b/chrome/browser/download/base_file.cc
@@ -6,9 +6,8 @@
 
 #include "base/file_util.h"
 #include "base/logging.h"
+#include "base/sha2.h"
 #include "base/stringprintf.h"
-#include "base/third_party/nss/blapi.h"
-#include "base/third_party/nss/sha256.h"
 #include "net/base/file_stream.h"
 #include "net/base/net_errors.h"
 #include "chrome/browser/browser_thread.h"
@@ -50,10 +49,8 @@ bool BaseFile::Initialize(bool calculate_hash) {
 
   calculate_hash_ = calculate_hash;
 
-  if (calculate_hash_) {
-    sha_context_.reset(new SHA256Context);
-    SHA256_Begin(sha_context_.get());
-  }
+  if (calculate_hash_)
+    sha_context_.reset(base::SHA256Context::Create());
 
   if (!full_path_.empty() ||
       download_util::CreateTemporaryFileForDownload(&full_path_))
@@ -78,11 +75,8 @@ bool BaseFile::AppendDataToFile(const char* data, size_t data_len) {
   if (written != data_len)
     return false;
 
-  if (calculate_hash_) {
-    SHA256_Update(sha_context_.get(),
-                  reinterpret_cast<const unsigned char*>(data),
-                  data_len);
-  }
+  if (calculate_hash_)
+    sha_context_->Update(std::string(data, data_len));
 
   return true;
 }
@@ -162,7 +156,7 @@ void BaseFile::Finish() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
 
   if (calculate_hash_)
-    SHA256_End(sha_context_.get(), sha256_hash_, NULL, kSha256HashLen);
+    sha_context_->Finish(sha256_hash_, kSha256HashLen);
 
   Close();
 }