[webcrypto] Add the KeyAlgorithm interface.

Source/modules/modules.gypi

Index: Source/modules/modules.gypi
diff --git a/Source/modules/modules.gypi b/Source/modules/modules.gypi
index b20542fa199403d93b6766f4c0325423543a05c5..408b0b55635728cadc5360a72998e1ebd1b0d236 100644
--- a/Source/modules/modules.gypi
+++ b/Source/modules/modules.gypi
@@ -10,10 +10,14 @@
     # Files for which bindings (.cpp and .h files) will be generated
     'modules_idl_files': [
       '<@(extra_blink_module_idl_files)',
-      'crypto/Algorithm.idl',
+      'crypto/AesKeyAlgorithm.idl',
       'crypto/Crypto.idl',
+      'crypto/HmacKeyAlgorithm.idl',
       'crypto/Key.idl',
+      'crypto/KeyAlgorithm.idl',
       'crypto/KeyPair.idl',
+      'crypto/RsaHashedKeyAlgorithm.idl',
+      'crypto/RsaKeyAlgorithm.idl',
       'crypto/SubtleCrypto.idl',
       'crypto/WorkerCrypto.idl',
       'device_orientation/DeviceAcceleration.idl',
@@ -215,8 +219,6 @@
     ],
     'modules_files': [
       '<@(extra_blink_module_files)',
-      'crypto/Algorithm.cpp',
-      'crypto/Algorithm.h',
       'crypto/Crypto.cpp',
       'crypto/Crypto.h',
       'crypto/CryptoResultImpl.cpp',
@@ -224,7 +226,17 @@
       'crypto/DOMWindowCrypto.cpp',
       'crypto/DOMWindowCrypto.h',
       'crypto/Key.cpp',
+      'crypto/AesKeyAlgorithm.cpp',
+      'crypto/AesKeyAlgorithm.h',
+      'crypto/HmacKeyAlgorithm.cpp',
+      'crypto/HmacKeyAlgorithm.h',
       'crypto/Key.h',
+      'crypto/KeyAlgorithm.cpp',
+      'crypto/KeyAlgorithm.h',
+      'crypto/RsaHashedKeyAlgorithm.cpp',
+      'crypto/RsaHashedKeyAlgorithm.h',
+      'crypto/RsaKeyAlgorithm.cpp',
+      'crypto/RsaKeyAlgorithm.h',
       'crypto/KeyPair.cpp',
       'crypto/KeyPair.h',
       'crypto/NormalizeAlgorithm.cpp',