Rename quic::kMaxPacketSize to quic::kMaxOutgoingPacketSize

As part of cl/242197597, QUIC now has separate values for maximum incoming and outgoing packet sizes. This CL renames the constant to be clearer.

gfe-relnote: constant rename, no functional impact
PiperOrigin-RevId: 242708648
Change-Id: I3f440ba44b9c12394026116aaecdd2c166cc63b6
diff --git a/quic/core/quic_packet_creator.cc b/quic/core/quic_packet_creator.cc
index 4d5bd14..96b5bc6 100644
--- a/quic/core/quic_packet_creator.cc
+++ b/quic/core/quic_packet_creator.cc
@@ -266,7 +266,7 @@
          // would calculate the correct lengths at the correct time, based on
          // the state at that time/place.
          QuicFramer::GetMinStreamFrameSize(version, 1u, offset, true,
-                                           kMaxPacketSize);
+                                           kMaxOutgoingPacketSize);
 }
 
 void QuicPacketCreator::CreateStreamFrame(QuicStreamId id,
@@ -364,13 +364,13 @@
     return;
   }
 
-  QUIC_CACHELINE_ALIGNED char stack_buffer[kMaxPacketSize];
+  QUIC_CACHELINE_ALIGNED char stack_buffer[kMaxOutgoingPacketSize];
   char* serialized_packet_buffer = delegate_->GetPacketBuffer();
   if (serialized_packet_buffer == nullptr) {
     serialized_packet_buffer = stack_buffer;
   }
 
-  SerializePacket(serialized_packet_buffer, kMaxPacketSize);
+  SerializePacket(serialized_packet_buffer, kMaxOutgoingPacketSize);
   OnSerializedPacket();
 }
 
@@ -418,13 +418,13 @@
   QuicPacketHeader header;
   FillPacketHeader(&header);
 
-  QUIC_CACHELINE_ALIGNED char stack_buffer[kMaxPacketSize];
+  QUIC_CACHELINE_ALIGNED char stack_buffer[kMaxOutgoingPacketSize];
   char* encrypted_buffer = delegate_->GetPacketBuffer();
   if (encrypted_buffer == nullptr) {
     encrypted_buffer = stack_buffer;
   }
 
-  QuicDataWriter writer(kMaxPacketSize, encrypted_buffer);
+  QuicDataWriter writer(kMaxOutgoingPacketSize, encrypted_buffer);
   size_t length_field_offset = 0;
   if (!framer_->AppendPacketHeader(header, &writer, &length_field_offset)) {
     QUIC_BUG << "AppendPacketHeader failed";
@@ -477,7 +477,7 @@
   size_t encrypted_length = framer_->EncryptInPlace(
       packet_.encryption_level, packet_.packet_number,
       GetStartOfEncryptedData(framer_->transport_version(), header),
-      writer.length(), kMaxPacketSize, encrypted_buffer);
+      writer.length(), kMaxOutgoingPacketSize, encrypted_buffer);
   if (encrypted_length == 0) {
     QUIC_BUG << "Failed to encrypt packet number " << header.packet_number;
     return;
@@ -637,7 +637,7 @@
   // FillPacketHeader increments packet_number_.
   FillPacketHeader(&header);
 
-  std::unique_ptr<char[]> buffer(new char[kMaxPacketSize]);
+  std::unique_ptr<char[]> buffer(new char[kMaxOutgoingPacketSize]);
   size_t length = framer_->BuildConnectivityProbingPacket(
       header, buffer.get(), max_plaintext_size_, packet_.encryption_level);
   DCHECK(length);
@@ -645,7 +645,7 @@
   const size_t encrypted_length = framer_->EncryptInPlace(
       packet_.encryption_level, packet_.packet_number,
       GetStartOfEncryptedData(framer_->transport_version(), header), length,
-      kMaxPacketSize, buffer.get());
+      kMaxOutgoingPacketSize, buffer.get());
   DCHECK(encrypted_length);
 
   OwningSerializedPacketPointer serialize_packet(new SerializedPacket(
@@ -669,7 +669,7 @@
   // FillPacketHeader increments packet_number_.
   FillPacketHeader(&header);
 
-  std::unique_ptr<char[]> buffer(new char[kMaxPacketSize]);
+  std::unique_ptr<char[]> buffer(new char[kMaxOutgoingPacketSize]);
   size_t length = framer_->BuildPaddedPathChallengePacket(
       header, buffer.get(), max_plaintext_size_, payload, random_,
       packet_.encryption_level);
@@ -678,7 +678,7 @@
   const size_t encrypted_length = framer_->EncryptInPlace(
       packet_.encryption_level, packet_.packet_number,
       GetStartOfEncryptedData(framer_->transport_version(), header), length,
-      kMaxPacketSize, buffer.get());
+      kMaxOutgoingPacketSize, buffer.get());
   DCHECK(encrypted_length);
 
   OwningSerializedPacketPointer serialize_packet(new SerializedPacket(
@@ -703,7 +703,7 @@
   // FillPacketHeader increments packet_number_.
   FillPacketHeader(&header);
 
-  std::unique_ptr<char[]> buffer(new char[kMaxPacketSize]);
+  std::unique_ptr<char[]> buffer(new char[kMaxOutgoingPacketSize]);
   size_t length = framer_->BuildPathResponsePacket(
       header, buffer.get(), max_plaintext_size_, payloads, is_padded,
       packet_.encryption_level);
@@ -712,7 +712,7 @@
   const size_t encrypted_length = framer_->EncryptInPlace(
       packet_.encryption_level, packet_.packet_number,
       GetStartOfEncryptedData(framer_->transport_version(), header), length,
-      kMaxPacketSize, buffer.get());
+      kMaxOutgoingPacketSize, buffer.get());
   DCHECK(encrypted_length);
 
   OwningSerializedPacketPointer serialize_packet(new SerializedPacket(