NativeStackSampler implementation for Mac.

base/profiler/stack_sampling_profiler_unittest.cc

Index: base/profiler/stack_sampling_profiler_unittest.cc
diff --git a/base/profiler/stack_sampling_profiler_unittest.cc b/base/profiler/stack_sampling_profiler_unittest.cc
index 1426f4647f6154efc8faebe10f071927ae762dbc..6d8d38f6ec65834106366792a40c8cb30ae30015 100644
--- a/base/profiler/stack_sampling_profiler_unittest.cc
+++ b/base/profiler/stack_sampling_profiler_unittest.cc
@@ -4,6 +4,7 @@
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
+#include "base/files/file_util.h"
 #include "base/memory/scoped_vector.h"
 #include "base/message_loop/message_loop.h"
 #include "base/path_service.h"
@@ -16,8 +17,8 @@
 #include "testing/gtest/include/gtest/gtest.h"
 
 // STACK_SAMPLING_PROFILER_SUPPORTED is used to conditionally enable the tests
-// below for supported platforms (currently Win x64).
-#if defined(_WIN64)
+// below for supported platforms (currently Win x64 and Mac).
+#if defined(_WIN64) || defined(OS_MACOSX)
 #define STACK_SAMPLING_PROFILER_SUPPORTED 1
 #endif
 
@@ -256,7 +257,8 @@ TEST(StackSamplingProfilerTest, MAYBE_Basic) {
       << FormatSampleForDiagnosticOutput(sample, profile.modules);
   FilePath executable_path;
   EXPECT_TRUE(PathService::Get(FILE_EXE, &executable_path));
-  EXPECT_EQ(executable_path, profile.modules[loc->module_index].filename);
+  EXPECT_EQ(executable_path,
+            MakeAbsoluteFilePath(profile.modules[loc->module_index].filename));
 }
 
 // Checks that the fire-and-forget interface works.