enterprise.platformKeys: Support the publicExponent parameter.

chrome/browser/chromeos/platform_keys/platform_keys_nss.cc

Index: chrome/browser/chromeos/platform_keys/platform_keys_nss.cc
diff --git a/chrome/browser/chromeos/platform_keys/platform_keys_nss.cc b/chrome/browser/chromeos/platform_keys/platform_keys_nss.cc
index 5493e181674be925363dc23b78c39d098cc63d9a..9d89797c8c2facd743752100863dbad50a2394ec 100644
--- a/chrome/browser/chromeos/platform_keys/platform_keys_nss.cc
+++ b/chrome/browser/chromeos/platform_keys/platform_keys_nss.cc
@@ -141,7 +141,7 @@ class GenerateRSAKeyState : public NSSOperationState {
         from, base::Bind(callback_, public_key_spki_der, error_message));
   }
 
-  unsigned int modulus_length_;
+  const unsigned int modulus_length_;
 
  private:
   // Must be called on origin thread, use CallBack() therefore.
@@ -167,8 +167,8 @@ class SignState : public NSSOperationState {
         from, base::Bind(callback_, signature, error_message));
   }
 
-  std::string public_key_;
-  std::string data_;
+  const std::string public_key_;
+  const std::string data_;
 
  private:
   // Must be called on origin thread, use CallBack() therefore.
@@ -253,7 +253,8 @@ NSSOperationState::NSSOperationState()
 
 GenerateRSAKeyState::GenerateRSAKeyState(unsigned int modulus_length,
                                          const GenerateKeyCallback& callback)
-    : modulus_length_(modulus_length), callback_(callback) {
+    : modulus_length_(modulus_length),
+      callback_(callback) {
 }
 
 SignState::SignState(const std::string& public_key,