Remove CanAttemptOwnership APIs.

we are migrating tpm status calls to TpmManagerClient.

BUG=b:172748724
TEST=build ok.

Change-Id: I8837750441a5c451c9107137d78fd0e04b8ad8f8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2581169
Commit-Queue: Leo Lai <cylai@google.com>
Reviewed-by: Maksim Ivanov <emaxx@chromium.org>
Cr-Commit-Position: refs/heads/master@{#836076}

chromeos/dbus/cryptohome/cryptohome_client.cc

@@ -298,13 +298,6 @@ class CryptohomeClientImpl : public CryptohomeClient {
     return CallBoolMethodAndBlock(&method_call, owned);
   }
 
-  // CryptohomeClient override.
-  void TpmCanAttemptOwnership(VoidDBusMethodCallback callback) override {
-    dbus::MethodCall method_call(cryptohome::kCryptohomeInterface,
-                                 cryptohome::kCryptohomeTpmCanAttemptOwnership);
-    CallVoidMethod(&method_call, std::move(callback));
-  }
-
   // CryptohomeClient override.
   void Pkcs11IsTpmTokenReady(DBusMethodCallback<bool> callback) override {
     dbus::MethodCall method_call(cryptohome::kCryptohomeInterface,

chromeos/dbus/cryptohome/cryptohome_client.h

@@ -231,10 +231,6 @@ class COMPONENT_EXPORT(CRYPTOHOME_CLIENT) CryptohomeClient {
   // TODO(hashimoto): Remove this method. crbug.com/141012
   virtual bool CallTpmIsOwnedAndBlock(bool* owned) = 0;
 
-  // Calls TpmCanAttemptOwnership method.
-  // This method tells the service that it is OK to attempt ownership.
-  virtual void TpmCanAttemptOwnership(VoidDBusMethodCallback callback) = 0;
-
   // Calls Pkcs11IsTpmTokenReady method.
   virtual void Pkcs11IsTpmTokenReady(DBusMethodCallback<bool> callback) = 0;
 

chromeos/dbus/cryptohome/fake_cryptohome_client.cc

@@ -192,12 +192,6 @@ bool FakeCryptohomeClient::CallTpmIsOwnedAndBlock(bool* owned) {
   return true;
 }
 
-void FakeCryptohomeClient::TpmCanAttemptOwnership(
-    VoidDBusMethodCallback callback) {
-  base::ThreadTaskRunnerHandle::Get()->PostTask(
-      FROM_HERE, base::BindOnce(std::move(callback), true));
-}
-
 void FakeCryptohomeClient::Pkcs11IsTpmTokenReady(
     DBusMethodCallback<bool> callback) {
   base::ThreadTaskRunnerHandle::Get()->PostTask(

chromeos/dbus/cryptohome/fake_cryptohome_client.h

@@ -75,7 +75,6 @@ class COMPONENT_EXPORT(CRYPTOHOME_CLIENT) FakeCryptohomeClient
   bool CallTpmIsEnabledAndBlock(bool* enabled) override;
   void TpmIsOwned(DBusMethodCallback<bool> callback) override;
   bool CallTpmIsOwnedAndBlock(bool* owned) override;
-  void TpmCanAttemptOwnership(VoidDBusMethodCallback callback) override;
   void Pkcs11IsTpmTokenReady(DBusMethodCallback<bool> callback) override;
   void Pkcs11GetTpmTokenInfo(
       DBusMethodCallback<TpmTokenInfo> callback) override;