Added support for signed policy blobs on desktop.

components/policy/core/common/cloud/policy_builder.h

Index: components/policy/core/common/cloud/policy_builder.h
diff --git a/components/policy/core/common/cloud/policy_builder.h b/components/policy/core/common/cloud/policy_builder.h
index 2298b3aebe2e794f8fbdfd2865a9572478c15909..20114c6fc7f307bfc344697299be618299c185e6 100644
--- a/components/policy/core/common/cloud/policy_builder.h
+++ b/components/policy/core/common/cloud/policy_builder.h
@@ -61,6 +61,11 @@ class PolicyBuilder {
   void SetDefaultSigningKey();
   void UnsetSigningKey();
 
+  // Sets the default initial signing key - the resulting policy will be signed
+  // by the default signing key, and will have that key set as the
+  // new_public_key field, as if it were an initial key provision.
+  void SetDefaultInitialSigningKey();
+
   scoped_ptr<crypto::RSAPrivateKey> GetNewSigningKey();
   void SetDefaultNewSigningKey();
   void UnsetNewSigningKey();
@@ -79,6 +84,11 @@ class PolicyBuilder {
   static scoped_ptr<crypto::RSAPrivateKey> CreateTestSigningKey();
   static scoped_ptr<crypto::RSAPrivateKey> CreateTestOtherSigningKey();
 
+  // Verification signatures for the two hard-coded testing keys above. These
+  // signatures are valid only for the kFakeDomain domain.
+  static std::string GetTestSigningKeySignature();
+  static std::string GetTestOtherSigningKeySignature();
+
  private:
   // Produces |key|'s signature over |data| and stores it in |signature|.
   void SignData(const std::string& data,