style: update non-type template args to kCamelCase

Updates most, if not all, deviations from our non-type template
arg style guide.

Change-Id: I275639a7c15e38e0db9d198a6802f9cd5bb9cf89
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/39661
Reviewed-by: Ewout van Bekkum <ewout@google.com>
Reviewed-by: Wyatt Hepler <hepler@google.com>
Pigweed-Auto-Submit: Ewout van Bekkum <ewout@google.com>
Commit-Queue: Auto-Submit <auto-submit@pigweed.google.com.iam.gserviceaccount.com>
diff --git a/pw_rpc/base_client_call_test.cc b/pw_rpc/base_client_call_test.cc
index 44a3243..7f15146 100644
--- a/pw_rpc/base_client_call_test.cc
+++ b/pw_rpc/base_client_call_test.cc
@@ -26,8 +26,8 @@
 
   {
     BaseClientCall call(&context.channel(),
-                        context.kServiceId,
-                        context.kMethodId,
+                        context.service_id(),
+                        context.method_id(),
                         [](BaseClientCall&, const Packet&) {});
     EXPECT_EQ(context.client().active_calls(), 1u);
   }
@@ -53,8 +53,8 @@
 TEST(BaseClientCall, SendsPacketWithPayload) {
   ClientContextForTest context;
   FakeClientCall call(&context.channel(),
-                      context.kServiceId,
-                      context.kMethodId,
+                      context.service_id(),
+                      context.method_id(),
                       [](BaseClientCall&, const Packet&) {});
 
   constexpr std::byte payload[]{std::byte{0x08}, std::byte{0x39}};
@@ -63,8 +63,8 @@
   EXPECT_EQ(context.output().packet_count(), 1u);
   Packet packet = context.output().sent_packet();
   EXPECT_EQ(packet.channel_id(), context.channel().id());
-  EXPECT_EQ(packet.service_id(), context.kServiceId);
-  EXPECT_EQ(packet.method_id(), context.kMethodId);
+  EXPECT_EQ(packet.service_id(), context.service_id());
+  EXPECT_EQ(packet.method_id(), context.method_id());
   EXPECT_EQ(std::memcmp(packet.payload().data(), payload, sizeof(payload)), 0);
 }