Replace size_t with int in a few media classes.

media/crypto/aes_decryptor_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <string>
 
 #include "media/base/data_buffer.h"
 #include "media/base/decrypt_config.h"
 #include "media/crypto/aes_decryptor.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 22 matching lines @@
 
  protected:
   void SetKeyIdForEncryptedData(const uint8* key_id, int key_id_size) {
     encrypted_data_->SetDecryptConfig(
         scoped_ptr<DecryptConfig>(new DecryptConfig(key_id, key_id_size)));
   }
 
   void DecryptAndExpectToSucceed() {
     scoped_refptr<Buffer> decrypted = decryptor_.Decrypt(encrypted_data_);
     ASSERT_TRUE(decrypted);
-    size_t data_length = sizeof(kOriginalData) - 1;
+    int data_length = sizeof(kOriginalData) - 1;
     ASSERT_EQ(data_length, decrypted->GetDataSize());
     EXPECT_EQ(0, memcmp(kOriginalData, decrypted->GetData(), data_length));
   }
 
   void DecryptAndExpectToFail() {
     scoped_refptr<Buffer> decrypted = decryptor_.Decrypt(encrypted_data_);
     EXPECT_FALSE(decrypted);
   }
 
   scoped_refptr<DataBuffer> encrypted_data_;
@@ skipping 21 matching lines @@
 
 TEST_F(AesDecryptorTest, KeyReplacement) {
   SetKeyIdForEncryptedData(kKeyId1, kKeyIdSize);
   decryptor_.AddKey(kKeyId1, kKeyIdSize, kWrongKey, kKeySize);
   ASSERT_NO_FATAL_FAILURE(DecryptAndExpectToFail());
   decryptor_.AddKey(kKeyId1, kKeyIdSize, kRightKey, kKeySize);
   ASSERT_NO_FATAL_FAILURE(DecryptAndExpectToSucceed());
 }
 
 }  // media