Move parts from enterprise.platformKeysInternal to platformKeysInternal for reuse.

chrome/browser/extensions/api/enterprise_platform_keys/enterprise_platform_keys_api.h

Index: chrome/browser/extensions/api/enterprise_platform_keys/enterprise_platform_keys_api.h
diff --git a/chrome/browser/extensions/api/enterprise_platform_keys/enterprise_platform_keys_api.h b/chrome/browser/extensions/api/enterprise_platform_keys/enterprise_platform_keys_api.h
index 05d9b11d9ad2c30377ac391afda3ce83f188ec17..dd889193e59f134773bca5e8f48c1a5b94189c0e 100644
--- a/chrome/browser/extensions/api/enterprise_platform_keys/enterprise_platform_keys_api.h
+++ b/chrome/browser/extensions/api/enterprise_platform_keys/enterprise_platform_keys_api.h
@@ -8,7 +8,6 @@
 #include <string>
 #include <vector>
 
-#include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "chrome/browser/extensions/chrome_extension_function.h"
@@ -35,20 +34,6 @@ class EnterprisePlatformKeysInternalGenerateKeyFunction
                              ENTERPRISE_PLATFORMKEYSINTERNAL_GENERATEKEY);
 };
 
-class EnterprisePlatformKeysInternalSignFunction
-    : public ChromeUIThreadExtensionFunction {
- private:
-  ~EnterprisePlatformKeysInternalSignFunction() override;
-  ResponseAction Run() override;
-
-  // Called when the signature was generated. If an error occurred,
-  // |signature| will be empty and instead |error_message| be set.
-  void OnSigned(const std::string& signature, const std::string& error_message);
-
-  DECLARE_EXTENSION_FUNCTION("enterprise.platformKeysInternal.sign",
-                             ENTERPRISE_PLATFORMKEYSINTERNAL_SIGN);
-};
-
 class EnterprisePlatformKeysGetCertificatesFunction
     : public ChromeUIThreadExtensionFunction {
  private: