[cast_channel] Make cast_channel related files not depend on "cast_channel.h"

extensions/browser/api/cast_channel/cast_framer_unittest.cc

 // Copyright 2014 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 "extensions/browser/api/cast_channel/cast_framer.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <string>
 
 #include "extensions/common/api/cast_channel/cast_channel.pb.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace extensions {
 namespace api {
 namespace cast_channel {
+
+using ::cast_channel::ChannelError;
+
 class CastFramerTest : public testing::Test {
  public:
   CastFramerTest() {}
   ~CastFramerTest() override {}
 
   void SetUp() override {
     cast_message_.set_protocol_version(CastMessage::CASTV2_1_0);
     cast_message_.set_source_id("source");
     cast_message_.set_destination_id("destination");
     cast_message_.set_namespace_("namespace");
@@ skipping 19 matching lines @@
 
 TEST_F(CastFramerTest, TestMessageFramerCompleteMessage) {
   ChannelError error;
   size_t message_length;
 
   WriteToBuffer(cast_message_str_);
 
   // Receive 1 byte of the header, framer demands 3 more bytes.
   EXPECT_EQ(4u, framer_->BytesRequested());
   EXPECT_EQ(nullptr, framer_->Ingest(1, &message_length, &error).get());
-  EXPECT_EQ(cast_channel::CHANNEL_ERROR_NONE, error);
+  EXPECT_EQ(ChannelError::NONE, error);
   EXPECT_EQ(3u, framer_->BytesRequested());
 
   // Ingest remaining 3, expect that the framer has moved on to requesting the
   // body contents.
   EXPECT_EQ(nullptr, framer_->Ingest(3, &message_length, &error).get());
-  EXPECT_EQ(cast_channel::CHANNEL_ERROR_NONE, error);
+  EXPECT_EQ(ChannelError::NONE, error);
   EXPECT_EQ(
       cast_message_str_.size() - MessageFramer::MessageHeader::header_size(),
       framer_->BytesRequested());
 
   // Remainder of packet sent over the wire.
   std::unique_ptr<CastMessage> message;
   message = framer_->Ingest(framer_->BytesRequested(), &message_length, &error);
   EXPECT_NE(static_cast<CastMessage*>(nullptr), message.get());
-  EXPECT_EQ(cast_channel::CHANNEL_ERROR_NONE, error);
+  EXPECT_EQ(ChannelError::NONE, error);
   EXPECT_EQ(message->SerializeAsString(), cast_message_.SerializeAsString());
   EXPECT_EQ(4u, framer_->BytesRequested());
   EXPECT_EQ(message->SerializeAsString().size(), message_length);
 }
 
 TEST_F(CastFramerTest, TestSerializeErrorMessageTooLarge) {
   std::string serialized;
   CastMessage big_message;
   big_message.CopyFrom(cast_message_);
   std::string payload;
   payload.append(MessageFramer::MessageHeader::max_message_size() + 1, 'x');
   big_message.set_payload_utf8(payload);
   EXPECT_FALSE(MessageFramer::Serialize(big_message, &serialized));
 }
 
 TEST_F(CastFramerTest, TestIngestIllegalLargeMessage) {
   std::string mangled_cast_message = cast_message_str_;
   mangled_cast_message[0] = 88;
   mangled_cast_message[1] = 88;
   mangled_cast_message[2] = 88;
   mangled_cast_message[3] = 88;
   WriteToBuffer(mangled_cast_message);
 
   size_t bytes_ingested;
   ChannelError error;
   EXPECT_EQ(4u, framer_->BytesRequested());
   EXPECT_EQ(nullptr, framer_->Ingest(4, &bytes_ingested, &error).get());
-  EXPECT_EQ(cast_channel::CHANNEL_ERROR_INVALID_MESSAGE, error);
+  EXPECT_EQ(ChannelError::INVALID_MESSAGE, error);
   EXPECT_EQ(0u, framer_->BytesRequested());
 
   // Test that the parser enters a terminal error state.
   WriteToBuffer(cast_message_str_);
   EXPECT_EQ(0u, framer_->BytesRequested());
   EXPECT_EQ(nullptr, framer_->Ingest(4, &bytes_ingested, &error).get());
-  EXPECT_EQ(cast_channel::CHANNEL_ERROR_INVALID_MESSAGE, error);
+  EXPECT_EQ(ChannelError::INVALID_MESSAGE, error);
   EXPECT_EQ(0u, framer_->BytesRequested());
 }
 
 TEST_F(CastFramerTest, TestUnparsableBodyProto) {
   // Message header is OK, but the body is replaced with "x"en.
   std::string mangled_cast_message = cast_message_str_;
   for (size_t i = MessageFramer::MessageHeader::header_size();
        i < mangled_cast_message.size();
        ++i) {
     std::fill(mangled_cast_message.begin() +
                   MessageFramer::MessageHeader::header_size(),
               mangled_cast_message.end(),
               'x');
   }
   WriteToBuffer(mangled_cast_message);
 
   // Send header.
   size_t message_length;
   ChannelError error;
   EXPECT_EQ(4u, framer_->BytesRequested());
   EXPECT_EQ(nullptr, framer_->Ingest(4, &message_length, &error).get());
-  EXPECT_EQ(cast_channel::CHANNEL_ERROR_NONE, error);
+  EXPECT_EQ(ChannelError::NONE, error);
   EXPECT_EQ(cast_message_str_.size() - 4, framer_->BytesRequested());
 
   // Send body, expect an error.
   std::unique_ptr<CastMessage> message;
   EXPECT_EQ(nullptr, framer_->Ingest(framer_->BytesRequested(), &message_length,
                                      &error).get());
-  EXPECT_EQ(cast_channel::CHANNEL_ERROR_INVALID_MESSAGE, error);
+  EXPECT_EQ(ChannelError::INVALID_MESSAGE, error);
 }
 }  // namespace cast_channel
 }  // namespace api
 }  // namespace extensions