Standalone GN on mac

Without the mac_deployment_target_build_override variable in build.gni
the following error is produced.

ERROR at //build/config/mac/mac_sdk.gni:17:27: Undefined identifier
  mac_deployment_target = mac_deployment_target_build_override
                          ^-----------------------------------

Added needed gtest/gtest_mac.* files.

BUG=pdfium:106

Review URL: https://codereview.chromium.org/1907193002

1 files changed, 98 insertions, 0 deletions

diff --git a/testing/gtest_mac.mm b/testing/gtest_mac.mm
new file mode 100644
index 0000000000..b490f558bd
--- /dev/null
+++ b/testing/gtest_mac.mm
@@ -0,0 +1,98 @@
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+#import "gtest_mac.h"
+#include <string>
+#include <gtest/gtest.h>
+#include <gtest/internal/gtest-port.h>
+#include <gtest/internal/gtest-string.h>
+#ifdef GTEST_OS_MAC
+#import <Foundation/Foundation.h>
+namespace testing {
+namespace internal {
+// Handles nil values for |obj| properly by using safe printing of %@ in
+// -stringWithFormat:.
+static inline const char* StringDescription(id<NSObject> obj) {
+  return [[NSString stringWithFormat:@"%@", obj] UTF8String];
+}
+// This overloaded version allows comparison between ObjC objects that conform
+// to the NSObject protocol. Used to implement {ASSERT|EXPECT}_EQ().
+GTEST_API_ AssertionResult CmpHelperNSEQ(const char* expected_expression,
+                                         const char* actual_expression,
+                                         id<NSObject> expected,
+                                         id<NSObject> actual) {
+  if (expected == actual || [expected isEqual:actual]) {
+    return AssertionSuccess();
+  }
+  return EqFailure(expected_expression, actual_expression,
+                   std::string(StringDescription(expected)),
+                   std::string(StringDescription(actual)), false);
+}
+// This overloaded version allows comparison between ObjC objects that conform
+// to the NSObject protocol. Used to implement {ASSERT|EXPECT}_NE().
+GTEST_API_ AssertionResult CmpHelperNSNE(const char* expected_expression,
+                                         const char* actual_expression,
+                                         id<NSObject> expected,
+                                         id<NSObject> actual) {
+  if (expected != actual && ![expected isEqual:actual]) {
+    return AssertionSuccess();
+  }
+  Message msg;
+  msg << "Expected: (" << expected_expression << ") != (" << actual_expression
+      << "), actual: " << StringDescription(expected) << " vs "
+      << StringDescription(actual);
+  return AssertionFailure(msg);
+}
+#if !defined(GTEST_OS_IOS)
+GTEST_API_ AssertionResult CmpHelperNSEQ(const char* expected_expression,
+                                         const char* actual_expression,
+                                         const NSRect& expected,
+                                         const NSRect& actual) {
+  if (NSEqualRects(expected, actual)) {
+    return AssertionSuccess();
+  }
+  return EqFailure(expected_expression, actual_expression,
+                   [NSStringFromRect(expected) UTF8String],
+                   [NSStringFromRect(actual) UTF8String], false);
+}
+GTEST_API_ AssertionResult CmpHelperNSNE(const char* expected_expression,
+                                         const char* actual_expression,
+                                         const NSRect& expected,
+                                         const NSRect& actual) {
+  if (!NSEqualRects(expected, actual)) {
+    return AssertionSuccess();
+  }
+  Message msg;
+  msg << "Expected: (" << expected_expression << ") != (" << actual_expression
+      << "), actual: " << [NSStringFromRect(expected) UTF8String] << " vs "
+      << [NSStringFromRect(actual) UTF8String];
+  return AssertionFailure(msg);
+}
+GTEST_API_ AssertionResult CmpHelperNSEQ(const char* expected_expression,
+                                         const char* actual_expression,
+                                         const NSPoint& expected,
+                                         const NSPoint& actual) {
+  if (NSEqualPoints(expected, actual)) {
+    return AssertionSuccess();
+  }
+  return EqFailure(expected_expression, actual_expression,
+                   [NSStringFromPoint(expected) UTF8String],
+                   [NSStringFromPoint(actual) UTF8String], false);
+}
+GTEST_API_ AssertionResult CmpHelperNSNE(const char* expected_expression,
+                                         const char* actual_expression,
+                                         const NSPoint& expected,
+                                         const NSPoint& actual) {
+  if (!NSEqualPoints(expected, actual)) {
+    return AssertionSuccess();
+  }
+  Message msg;
+  msg << "Expected: (" << expected_expression << ") != (" << actual_expression
+      << "), actual: " << [NSStringFromPoint(expected) UTF8String] << " vs "
+      << [NSStringFromPoint(actual) UTF8String];
+  return AssertionFailure(msg);
+}
+#endif  // !GTEST_OS_IOS
+}  // namespace internal
+}  // namespace testing
+#endif  // GTEST_OS_MAC