[HLO Componentization] Create hlo/transforms/ sub-component (Phase II).

This CL takes care of
1. Migrating external projects dependencies from  xla/service --> xla/hlo/transforms

Phase I takes care of
1. Migrating xla/service/<passes> --> xla/hlo/transforms/<passes>
2. Setting up build aliases in xla/service ensuring external dependencies are still satisfied.

PiperOrigin-RevId: 687713043

xla/hlo/experimental/auto_sharding/BUILD

@@ -52,6 +52,9 @@ cc_library(
         "//xla/hlo/ir:hlo",
         "//xla/hlo/pass:hlo_pass",
         "//xla/hlo/transforms:hlo_constant_splitter",
+        "//xla/hlo/transforms:hlo_dce",
+        "//xla/hlo/transforms:hlo_memory_scheduler",
+        "//xla/hlo/transforms:optimize_input_output_buffer_alias",
         "//xla/hlo/utils:hlo_live_range",
         "//xla/hlo/utils:hlo_sharding_util",
         "//xla/service:buffer_value",
@@ -62,10 +65,7 @@ cc_library(
         "//xla/service:hlo_alias_analysis",
         "//xla/service:hlo_buffer",
         "//xla/service:hlo_cost_analysis",
-        "//xla/service:hlo_dce",
-        "//xla/service:hlo_memory_scheduler",
         "//xla/service:hlo_value",
-        "//xla/service:optimize_input_output_buffer_alias",
         "//xla/service:sharding_propagation",
         "@com_google_absl//absl/algorithm:container",
         "@com_google_absl//absl/container:btree",
@@ -385,11 +385,11 @@ xla_cc_test(
         "//xla/hlo/ir:hlo",
         "//xla/hlo/parser:hlo_parser",
         "//xla/hlo/testlib:verified_hlo_module",
+        "//xla/hlo/transforms:hlo_memory_scheduler",
         "//xla/hlo/utils:hlo_live_range",
         "//xla/hlo/utils:hlo_matchers",
         "//xla/service:buffer_value",
         "//xla/service:hlo_alias_analysis",
-        "//xla/service:hlo_memory_scheduler",
         "//xla/service:hlo_value",
         "//xla/tests:hlo_test_base",
         "//xla/tests:xla_internal_test_main",

xla/hlo/experimental/auto_sharding/auto_sharding.cc

@@ -69,6 +69,9 @@ limitations under the License.
 #include "xla/hlo/ir/hlo_schedule.h"
 #include "xla/hlo/ir/hlo_sharding.h"
 #include "xla/hlo/transforms/simplifiers/hlo_constant_splitter.h"
+#include "xla/hlo/transforms/simplifiers/hlo_dce.h"
+#include "xla/hlo/transforms/simplifiers/hlo_memory_scheduler.h"
+#include "xla/hlo/transforms/simplifiers/optimize_input_output_buffer_alias.h"
 #include "xla/hlo/utils/hlo_live_range.h"
 #include "xla/hlo/utils/hlo_sharding_util.h"
 #include "xla/service/buffer_value.h"
@@ -78,10 +81,7 @@ limitations under the License.
 #include "xla/service/hlo_alias_analysis.h"
 #include "xla/service/hlo_buffer.h"
 #include "xla/service/hlo_cost_analysis.h"
-#include "xla/service/hlo_dce.h"
-#include "xla/service/hlo_memory_scheduler.h"
 #include "xla/service/hlo_value.h"
-#include "xla/service/optimize_input_output_buffer_alias.h"
 #include "xla/service/sharding_propagation.h"
 #include "xla/shape.h"
 #include "xla/shape_tree.h"

xla/hlo/experimental/auto_sharding/auto_sharding_test.cc

@@ -44,11 +44,11 @@ limitations under the License.
 #include "xla/hlo/ir/hlo_sharding.h"
 #include "xla/hlo/parser/hlo_parser.h"
 #include "xla/hlo/testlib/verified_hlo_module.h"
+#include "xla/hlo/transforms/simplifiers/hlo_memory_scheduler.h"
 #include "xla/hlo/utils/hlo_live_range.h"
 #include "xla/hlo/utils/hlo_matchers.h"
 #include "xla/service/buffer_value.h"
 #include "xla/service/hlo_alias_analysis.h"
-#include "xla/service/hlo_memory_scheduler.h"
 #include "xla/service/hlo_value.h"
 #include "xla/tests/hlo_test_base.h"
 #include "xla/tsl/lib/core/status_test_util.h"