[HLO Componentization] Populate hlo/testlib sub-component (Phase II).

This CL takes care of
1. Migrating external projects dependencies from

```
tensorflow/compiler/xla:test
tensorflow/compiler/xla:test_helpers
tensorflow/compiler/xla/service:pattern_matcher_gmock
```

to `tensorflow/compiler/xla/hlo/testlib:*`

PiperOrigin-RevId: 715167258

Author: sdasgup3

xla/hlo/transforms/collectives/BUILD

@@ -83,8 +83,8 @@ xla_cc_test(
         "//xla:util",
         "//xla/hlo/ir:hlo",
         "//xla/hlo/testlib:hlo_hardware_independent_test_base",
+        "//xla/hlo/testlib:pattern_matcher_gmock",
         "//xla/service:pattern_matcher",
-        "//xla/service:pattern_matcher_gmock",
         "//xla/tsl/lib/core:status_test_util",
         "@com_google_absl//absl/strings:string_view",
         "@com_google_googletest//:gtest_main",
@@ -189,11 +189,10 @@ xla_cc_test(
     srcs = ["collectives_schedule_linearizer_test.cc"],
     deps = [
         ":collectives_schedule_linearizer",
-        "//xla:test",
-        "//xla:test_helpers",
         "//xla:xla_data_proto_cc",
         "//xla/hlo/ir:hlo",
         "//xla/hlo/testlib:hlo_hardware_independent_test_base",
+        "//xla/hlo/testlib:test_helpers",
         "//xla/service:pattern_matcher",
         "@com_google_googletest//:gtest_main",
     ],

xla/hlo/transforms/collectives/async_collective_creator_test.cc

@@ -25,8 +25,8 @@ limitations under the License.
 #include "xla/hlo/ir/hlo_opcode.h"
 #include "xla/hlo/ir/hlo_schedule.h"
 #include "xla/hlo/testlib/hlo_hardware_independent_test_base.h"
+#include "xla/hlo/testlib/pattern_matcher_gmock.h"
 #include "xla/service/pattern_matcher.h"
-#include "xla/service/pattern_matcher_gmock.h"
 #include "xla/side_effect_util.h"
 #include "xla/tsl/lib/core/status_test_util.h"
 #include "xla/util.h"

xla/hlo/transforms/collectives/collectives_schedule_linearizer_test.cc

@@ -19,9 +19,8 @@ limitations under the License.
 #include "xla/hlo/ir/hlo_instruction.h"
 #include "xla/hlo/ir/hlo_module.h"
 #include "xla/hlo/testlib/hlo_hardware_independent_test_base.h"
+#include "xla/hlo/testlib/test_helpers.h"
 #include "xla/service/pattern_matcher.h"
-#include "xla/test.h"
-#include "xla/test_helpers.h"
 #include "xla/xla_data.pb.h"
 
 namespace xla {

xla/pjrt/gpu/BUILD

@@ -167,14 +167,14 @@ xla_cc_test(
         "//xla:literal_util",
         "//xla:shape_util",
         "//xla:status_macros",
-        "//xla:test",
         "//xla:types",
         "//xla:util",
         "//xla:xla_data_proto_cc",
         "//xla/ffi",
         "//xla/ffi:ffi_api",
         "//xla/hlo/builder:xla_computation",
         "//xla/hlo/parser:hlo_parser",
+        "//xla/hlo/testlib:test",
         "//xla/pjrt:host_memory_spaces",
         "//xla/pjrt:mlir_to_hlo",
         "//xla/pjrt:pjrt_client",
@@ -390,9 +390,9 @@ xla_test(
         ":se_gpu_pjrt_compiler_impl",
         "//xla:literal",
         "//xla:literal_util",
-        "//xla:test",
         "//xla/hlo/builder:xla_computation",
         "//xla/hlo/parser:hlo_parser",
+        "//xla/hlo/testlib:test",
         "//xla/mlir_hlo",
         "//xla/pjrt:pjrt_client",
         "//xla/pjrt:pjrt_compiler",

xla/pjrt/gpu/se_gpu_pjrt_client_test.cc

@@ -42,6 +42,7 @@ limitations under the License.
 #include "xla/ffi/ffi_api.h"
 #include "xla/hlo/builder/xla_computation.h"
 #include "xla/hlo/parser/hlo_parser.h"
+#include "xla/hlo/testlib/test.h"
 #include "xla/layout.h"
 #include "xla/literal.h"
 #include "xla/literal_util.h"
@@ -63,7 +64,6 @@ limitations under the License.
 #include "xla/status_macros.h"
 #include "xla/stream_executor/device_memory.h"
 #include "xla/stream_executor/stream.h"
-#include "xla/test.h"
 #include "xla/tests/literal_test_util.h"
 #include "xla/tsl/lib/core/status_test_util.h"
 #include "xla/tsl/platform/subprocess.h"

xla/pjrt/gpu/se_gpu_pjrt_compiler_test.cc

@@ -29,6 +29,7 @@ limitations under the License.
 #include "mlir/Parser/Parser.h"
 #include "xla/hlo/builder/xla_computation.h"
 #include "xla/hlo/parser/hlo_parser.h"
+#include "xla/hlo/testlib/test.h"
 #include "xla/literal.h"
 #include "xla/literal_util.h"
 #include "xla/mlir_hlo/mhlo/IR/hlo_ops.h"
@@ -38,7 +39,6 @@ limitations under the License.
 #include "xla/pjrt/pjrt_compiler.h"
 #include "xla/pjrt/pjrt_executable.h"
 #include "xla/pjrt/plugin/xla_gpu/xla_gpu_client_options.h"
-#include "xla/test.h"
 #include "xla/tests/literal_test_util.h"
 #include "tsl/platform/status_matchers.h"
 #include "tsl/platform/statusor.h"

xla/service/gpu/fusions/triton/BUILD

@@ -564,9 +564,9 @@ xla_test(
         "//xla:xla_proto_cc",
         "//xla/hlo/ir:hlo",
         "//xla/hlo/testlib:filecheck",
+        "//xla/hlo/testlib:pattern_matcher_gmock",
         "//xla/hlo/testlib:verified_hlo_module",
         "//xla/service:pattern_matcher",
-        "//xla/service:pattern_matcher_gmock",
         "//xla/service/gpu:backend_configs_cc",
         "//xla/service/gpu:gpu_device_info_for_tests",
         "//xla/service/gpu/model:tiled_hlo_instruction_or_computation",

xla/service/gpu/fusions/triton/triton_fusion_emitter_device_legacy_test.cc

@@ -35,6 +35,7 @@ limitations under the License.
 #include "xla/hlo/ir/hlo_instruction.h"
 #include "xla/hlo/ir/hlo_instructions.h"
 #include "xla/hlo/testlib/filecheck.h"
+#include "xla/hlo/testlib/pattern_matcher_gmock.h"
 #include "xla/hlo/testlib/verified_hlo_module.h"
 #include "xla/service/gpu/backend_configs.pb.h"
 #include "xla/service/gpu/fusions/triton/triton_fusion_emitter.h"
@@ -43,7 +44,6 @@ limitations under the License.
 #include "xla/service/gpu/model/tiled_hlo_computation.h"
 #include "xla/service/gpu/tests/gpu_codegen_test.h"
 #include "xla/service/pattern_matcher.h"
-#include "xla/service/pattern_matcher_gmock.h"
 #include "xla/stream_executor/device_description.h"
 #include "xla/tsl/lib/core/status_test_util.h"
 #include "xla/tsl/platform/env.h"

xla/service/llvm_ir/BUILD

@@ -338,10 +338,10 @@ xla_cc_test(
         ":ir_array",
         ":llvm_util",
         "//xla:shape_util",
-        "//xla:test",
         "//xla:xla_data_proto_cc",
         "//xla/hlo/testlib:filecheck",
         "//xla/tests:xla_internal_test_main",
+        "@com_google_googletest//:gtest_main",
         "@llvm-project//llvm:Support",
         "@llvm-project//llvm:ir_headers",
         "@tsl//tsl/platform:statusor",

xla/service/llvm_ir/ir_array_test.cc

@@ -17,6 +17,7 @@ limitations under the License.
 
 #include <string>
 
+#include <gtest/gtest.h>
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/IR/Argument.h"
 #include "llvm/IR/BasicBlock.h"
@@ -29,7 +30,6 @@ limitations under the License.
 #include "xla/service/llvm_ir/llvm_util.h"
 #include "xla/shape.h"
 #include "xla/shape_util.h"
-#include "xla/test.h"
 #include "xla/xla_data.pb.h"
 #include "tsl/platform/statusor.h"