Autofix c casts to c++ casts
diff --git a/test/core/end2end/tests/stream_compression_payload.cc b/test/core/end2end/tests/stream_compression_payload.cc
index 6abb3bb..f11230f 100644
--- a/test/core/end2end/tests/stream_compression_payload.cc
+++ b/test/core/end2end/tests/stream_compression_payload.cc
@@ -93,9 +93,9 @@
   static const char chars[] = "abcdefghijklmnopqrstuvwxyz1234567890";
   char* output;
   const size_t output_size = 1024 * 1024;
-  output = (char*)gpr_malloc(output_size);
+  output = static_cast<char*>(gpr_malloc(output_size));
   for (i = 0; i < output_size - 1; ++i) {
-    output[i] = chars[rand() % (int)(sizeof(chars) - 1)];
+    output[i] = chars[rand() % static_cast<int>(sizeof(chars) - 1)];
   }
   output[output_size - 1] = '\0';
   grpc_slice out = grpc_slice_from_copied_string(output);
@@ -177,7 +177,7 @@
   op->flags = 0;
   op->reserved = nullptr;
   op++;
-  error = grpc_call_start_batch(c, ops, (size_t)(op - ops), tag(1), nullptr);
+  error = grpc_call_start_batch(c, ops, static_cast<size_t>(op - ops), tag(1), nullptr);
   GPR_ASSERT(GRPC_CALL_OK == error);
 
   error =
@@ -199,7 +199,7 @@
   op->flags = 0;
   op->reserved = nullptr;
   op++;
-  error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(102), nullptr);
+  error = grpc_call_start_batch(s, ops, static_cast<size_t>(op - ops), tag(102), nullptr);
   GPR_ASSERT(GRPC_CALL_OK == error);
 
   CQ_EXPECT_COMPLETION(cqv, tag(102), 1);
@@ -225,7 +225,7 @@
   op->flags = 0;
   op->reserved = nullptr;
   op++;
-  error = grpc_call_start_batch(s, ops, (size_t)(op - ops), tag(103), nullptr);
+  error = grpc_call_start_batch(s, ops, static_cast<size_t>(op - ops), tag(103), nullptr);
   GPR_ASSERT(GRPC_CALL_OK == error);
 
   CQ_EXPECT_COMPLETION(cqv, tag(103), 1);