Removing definition of lsan macros from Abseil BUILD.gn files.

Sanitizers macros should never be defined in a project BUILD.gn files.

Bug: 852817
Change-Id: I55597f31042ebeaf6aae8c8670892a9ba7f49417
Reviewed-on: https://chromium-review.googlesource.com/1102566Reviewed-by: Nico Weber <thakis@chromium.org>
Commit-Queue: Mirko Bonadei <mbonadei@chromium.org>
Cr-Commit-Position: refs/heads/master@{#567679}

third_party/abseil-cpp/absl/debugging/BUILD.gn

@@ -5,6 +5,7 @@
 # WARNING: This file is automatically generated.
 
 import("//build_overrides/build.gni")
+import("//build/config/sanitizers/sanitizers.gni")
 
 if (build_with_chromium) {
   visibility = [
@@ -184,42 +185,42 @@ source_set("leak_check_disable") {
   ]
 }
 
-source_set("leak_check_api_enabled_for_testing") {
-  testonly = true
-  configs -= [ "//build/config/compiler:chromium_code" ]
-  configs += [
-    "//build/config/compiler:no_chromium_code",
-    "//third_party/abseil-cpp:absl_default_cflags_cc",
-  ]
-  cflags_cc = [ "-DLEAK_SANITIZER" ]
-  public_configs = [ "//third_party/abseil-cpp:absl_include_config" ]
-  sources = [
-    "leak_check.cc",
-  ]
-  public = [
-    "leak_check.h",
-  ]
-  visibility = []
-  visibility += [ ":*" ]
-}
-
-source_set("leak_check_api_disabled_for_testing") {
-  testonly = true
-  configs -= [ "//build/config/compiler:chromium_code" ]
-  configs += [
-    "//build/config/compiler:no_chromium_code",
-    "//third_party/abseil-cpp:absl_default_cflags_cc",
-  ]
-  cflags_cc = [ "-ULEAK_SANITIZER" ]
-  public_configs = [ "//third_party/abseil-cpp:absl_include_config" ]
-  sources = [
-    "leak_check.cc",
-  ]
-  public = [
-    "leak_check.h",
-  ]
-  visibility = []
-  visibility += [ ":*" ]
+if (is_lsan) {
+  source_set("leak_check_api_enabled_for_testing") {
+    testonly = true
+    configs -= [ "//build/config/compiler:chromium_code" ]
+    configs += [
+      "//build/config/compiler:no_chromium_code",
+      "//third_party/abseil-cpp:absl_default_cflags_cc",
+    ]
+    public_configs = [ "//third_party/abseil-cpp:absl_include_config" ]
+    sources = [
+      "leak_check.cc",
+    ]
+    public = [
+      "leak_check.h",
+    ]
+    visibility = []
+    visibility += [ ":*" ]
+  }
+} else {
+  source_set("leak_check_api_disabled_for_testing") {
+    testonly = true
+    configs -= [ "//build/config/compiler:chromium_code" ]
+    configs += [
+      "//build/config/compiler:no_chromium_code",
+      "//third_party/abseil-cpp:absl_default_cflags_cc",
+    ]
+    public_configs = [ "//third_party/abseil-cpp:absl_include_config" ]
+    sources = [
+      "leak_check.cc",
+    ]
+    public = [
+      "leak_check.h",
+    ]
+    visibility = []
+    visibility += [ ":*" ]
+  }
 }
 
 source_set("stack_consumption") {