Revert of NativeStackSampler implementation for Mac.

base/BUILD.gn

Index: base/BUILD.gn
diff --git a/base/BUILD.gn b/base/BUILD.gn
index f8c4dba14d90c63364611c9e49c27a6cb2d57b89..3125e8d99aec1e232a1bae54d30da03e14a38f4f 100644
--- a/base/BUILD.gn
+++ b/base/BUILD.gn
@@ -722,7 +722,6 @@
     "process/process_win.cc",
     "profiler/native_stack_sampler.cc",
     "profiler/native_stack_sampler.h",
-    "profiler/native_stack_sampler_mac.cc",
     "profiler/native_stack_sampler_posix.cc",
     "profiler/native_stack_sampler_win.cc",
     "profiler/scoped_profile.cc",
@@ -1467,10 +1466,6 @@
       "strings/sys_string_conversions_posix.cc",
       "threading/platform_thread_internal_posix.cc",
     ]
-
-    if (is_mac) {
-      sources -= [ "profiler/native_stack_sampler_posix.cc" ]
-    }
   } else {
     # Non-Mac/ios.
     sources -= [
@@ -1843,9 +1838,7 @@
       "//base/win:base_win_features",
     ]
   }
-}
-
-if (is_win || is_mac) {
+
   if (current_cpu == "x64") {
     # Must be a shared library so that it can be unloaded during testing.
     shared_library("base_profiler_test_support_library") {
@@ -2307,9 +2300,6 @@
       "CoreFoundation.framework",
       "Foundation.framework",
     ]
-    if (current_cpu == "x64") {
-      data_deps += [ ":base_profiler_test_support_library" ]
-    }
   }
 
   if (is_linux) {
@@ -2348,7 +2338,7 @@
     deps += [ "//base:scoped_handle_test_dll" ]
     if (current_cpu == "x64") {
       sources += [ "profiler/win32_stack_frame_unwinder_unittest.cc" ]
-      data_deps += [ ":base_profiler_test_support_library" ]
+      deps += [ ":base_profiler_test_support_library" ]
     }
   }