Componentize component_updater: Split crx_file code off into its own component.

chrome/browser/extensions/sandboxed_unpacker.cc

Index: chrome/browser/extensions/sandboxed_unpacker.cc
diff --git a/chrome/browser/extensions/sandboxed_unpacker.cc b/chrome/browser/extensions/sandboxed_unpacker.cc
index f54c41d9ee4f280bc774d9bf383353c72bc6e28e..bfdc115ad82ddfd5888ec4a4e70575cc25bbd13d 100644
--- a/chrome/browser/extensions/sandboxed_unpacker.cc
+++ b/chrome/browser/extensions/sandboxed_unpacker.cc
@@ -26,12 +26,13 @@
 #include "chrome/common/chrome_utility_messages.h"
 #include "chrome/common/extensions/chrome_utility_extensions_messages.h"
 #include "chrome/common/extensions/extension_file_util.h"
+#include "components/crx_file/constants.h"
+#include "components/crx_file/crx_file.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/utility_process_host.h"
 #include "content/public/common/common_param_traits.h"
 #include "crypto/signature_verifier.h"
 #include "extensions/common/constants.h"
-#include "extensions/common/crx_file.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/extension_l10n_util.h"
 #include "extensions/common/file_util.h"
@@ -46,6 +47,7 @@
 using base::ASCIIToUTF16;
 using content::BrowserThread;
 using content::UtilityProcessHost;
+using crx_file::CrxFile;
 
 // The following macro makes histograms that record the length of paths
 // in this file much easier to read.
@@ -543,8 +545,8 @@ bool SandboxedUnpacker::ValidateSignature() {
   }
 
   crypto::SignatureVerifier verifier;
-  if (!verifier.VerifyInit(extension_misc::kSignatureAlgorithm,
-                           sizeof(extension_misc::kSignatureAlgorithm),
+  if (!verifier.VerifyInit(crx_file::kSignatureAlgorithm,
+                           sizeof(crx_file::kSignatureAlgorithm),
                            &signature.front(),
                            signature.size(),
                            &key.front(),