[ZCash] Remove zcash paste dependency (#28333)

Remove zcash paste dependency
Resolves https://github.com/brave/brave-browser/issues/44971

components/brave_wallet/browser/zcash/rust/BUILD.gn

@@ -134,7 +134,6 @@ rust_static_library("rust_lib") {
     "//brave/third_party/rust/nonempty/v0_7:lib",
     "//brave/third_party/rust/orchard/v0_8:lib",
     "//brave/third_party/rust/pasta_curves/v0_5:lib",
-    "//brave/third_party/rust/paste/v1:lib",
     "//brave/third_party/rust/rand/v0_8:lib",
     "//brave/third_party/rust/shardtree/v0_3:lib",
     "//brave/third_party/rust/zcash_note_encryption/v0_4:lib",

components/brave_wallet/browser/zcash/rust/Cargo.toml

@@ -13,7 +13,6 @@ zcash_primitives  = { version = "0.15.1", default-features = false }
 zcash_note_encryption = "0.4"
 zcash_client_backend = { version = "0.12.1", default-features = false }
 shardtree = { version="0.3.2", features=["legacy-api"] }
-paste = "1"
 
 [lib]
 name = "zcash"

components/brave_wallet/browser/zcash/rust/lib.rs

@@ -94,30 +94,29 @@ macro_rules! impl_result {
 }
 
 macro_rules! impl_result_option_wrapper {
-    ($t: ty, $rt: ident, $l: ident) => {
-        paste::item! {
-            fn [<wrap_ $l>](item: $t) -> Box<$rt> {
-                Box::new($rt(Ok(Option::Some(item))))
-            }
-            fn [<wrap_ $l _error>]() -> Box<$rt> {
-                Box::new($rt(Err(Error::ShardStoreError)))
-            }
-            fn [<wrap_ $l _none>]() -> Box<$rt> {
-                Box::new($rt(Ok(Option::None)))
-            }
+    ($t:ty, $rt:ident, $wrap_l:ident, $wrap_l_error:ident, $wrap_l_none:ident) => {
+        fn $wrap_l(item: $t) -> Box<$rt> {
+            Box::new($rt(Ok(Some(item))))
+        }
+
+        fn $wrap_l_error() -> Box<$rt> {
+            Box::new($rt(Err(Error::ShardStoreError)))
+        }
+
+        fn $wrap_l_none() -> Box<$rt> {
+            Box::new($rt(Ok(None)))
         }
     };
 }
 
 macro_rules! impl_result_wrapper {
-    ($t: ty, $rt: ident, $l: ident) => {
-        paste::item! {
-            fn [<wrap_ $l>](item: $t) -> Box<$rt> {
-                Box::new($rt(Ok(item)))
-            }
-            fn [<wrap_ $l _error>]() -> Box<$rt> {
-                Box::new($rt(Err(Error::ShardStoreError)))
-            }
+    ($t:ty, $rt:ident, $wrap_l:ident, $wrap_l_error:ident) => {
+        fn $wrap_l(item: $t) -> Box<$rt> {
+            Box::new($rt(Ok(item)))
+        }
+
+        fn $wrap_l_error() -> Box<$rt> {
+            Box::new($rt(Err(Error::ShardStoreError)))
         }
     };
 }
@@ -733,22 +732,37 @@ struct CxxCheckpointsResultWrapper(Result<Vec<CxxOrchardCheckpointBundle>, Error
 struct CxxShardRootsResultWrapper(Result<Vec<CxxOrchardShardAddress>, Error>);
 struct CxxCheckpointCountResultWrapper(Result<usize, Error>);
 
-impl_result_option_wrapper!(CxxOrchardShard, CxxOrchardShardResultWrapper, shard_tree_shard);
+impl_result_option_wrapper!(
+    CxxOrchardShard,
+    CxxOrchardShardResultWrapper,
+    wrap_shard_tree_shard,
+    wrap_shard_tree_shard_error,
+    wrap_shard_tree_shard_none);
 impl_result_option_wrapper!(
     CxxOrchardShardTreeCap,
     CxxOrchardShardTreeCapResultWrapper,
-    shard_tree_cap
-);
-impl_result_option_wrapper!(u32, CxxCheckpointIdResultWrapper, checkpoint_id);
+    wrap_shard_tree_cap,
+    wrap_shard_tree_cap_error,
+    wrap_shard_tree_cap_none);
+impl_result_option_wrapper!(u32, CxxCheckpointIdResultWrapper,
+    wrap_checkpoint_id,
+    wrap_checkpoint_id_error,
+    wrap_checkpoint_id_none);
 impl_result_option_wrapper!(
     CxxOrchardCheckpointBundle,
     CxxCheckpointBundleResultWrapper,
-    checkpoint_bundle
+    wrap_checkpoint_bundle,
+    wrap_checkpoint_bundle_error,
+    wrap_checkpoint_bundle_none
 );
-impl_result_wrapper!(bool, CxxBoolResultWrapper, bool);
-impl_result_wrapper!(usize, CxxCheckpointCountResultWrapper, checkpoint_count);
-impl_result_wrapper!(Vec<CxxOrchardCheckpointBundle>, CxxCheckpointsResultWrapper, checkpoints);
-impl_result_wrapper!(Vec<CxxOrchardShardAddress>, CxxShardRootsResultWrapper, shard_tree_roots);
+impl_result_wrapper!(bool, CxxBoolResultWrapper,
+    wrap_bool, wrap_bool_error);
+impl_result_wrapper!(usize, CxxCheckpointCountResultWrapper,
+    wrap_checkpoint_count, wrap_checkpoint_count_error);
+impl_result_wrapper!(Vec<CxxOrchardCheckpointBundle>, CxxCheckpointsResultWrapper,
+    wrap_checkpoints, wrap_checkpoints_error);
+impl_result_wrapper!(Vec<CxxOrchardShardAddress>, CxxShardRootsResultWrapper,
+    wrap_shard_tree_roots, wrap_shard_tree_roots_error);
 
 fn generate_orchard_extended_spending_key_from_seed(
     bytes: &[u8],

third_party/rust/chromium_crates_io/Cargo.lock

@@ -2373,7 +2373,6 @@ dependencies = [
  "brave_wallet",
  "cxx",
  "orchard",
- "paste",
  "rand 0.8.5",
  "shardtree",
  "zcash_client_backend",