Add DER parsing of AlgorithmId for signatures.

net/der/input.h

Index: net/der/input.h
diff --git a/net/der/input.h b/net/der/input.h
index f8eb467a482dc765788c720da9e4ec6b9102522d..c8ab5def0a89e8dc37b05ccbb110947ebf152e38 100644
--- a/net/der/input.h
+++ b/net/der/input.h
@@ -55,6 +55,12 @@ class NET_EXPORT_PRIVATE Input {
   // Return true if the Input's data and |other|'s data are byte-wise equal.
   bool Equals(const Input& other) const;
 
+  // Return true if the Input's data and |data| are byte-wise equal.
+  template <size_t N>
+  bool Equals(const uint8_t(&data)[N]) const {
+    return Equals(Input(data));

[Ryan Sleevi, 2015/06/29 14:45:24]

So, this isn't ideal because it double-instantiates templates. You could do
Equals(Input(data, size)) to avoid the double instantiation, or simply leave it
to the caller to do Equals(Input(kTestData))

Either of those are more preferable than Equals(Input(Data)) in here.

[eroman, 2015/06/29 15:19:00]

Removed.

+  }
+
   // Returns a pointer to the Input's data. This method is marked as "unsafe"
   // because access to the Input's data should be done through ByteReader
   // instead. This method should only be used where using a ByteReader truly