[ObjC ARC] Converts ios/testing:ocmock_support_unittest to ARC.

ios/testing/ocmock_complex_type_helper_unittest.mm

 // Copyright 2012 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 "ios/testing/ocmock_complex_type_helper.h"
 
 #include "base/logging.h"
-#import "base/mac/scoped_nsobject.h"
 #include "testing/platform_test.h"
 #import "third_party/ocmock/OCMock/OCMock.h"
 #include "third_party/ocmock/gtest_support.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 // A complex type to test with..
 struct SampleComplexType {
   int number;
   float blob;
 };
 
 typedef int ScalarType;
 
 @protocol TestedProtocol
 - (void)passObject:(id)foo;
@@ skipping 19 matching lines @@
 }
 
 @end
 
 namespace {
 
 class OCMockComplexTypeHelperTest : public PlatformTest {
  protected:
   void SetUp() override {
     PlatformTest::SetUp();
-    helped_mock_.reset([[MockClass alloc]
-        initWithRepresentedObject:
-            [OCMockObject mockForProtocol:@protocol(TestedProtocol)]]);
+    OCMockObject* protocol_mock =

[liaoyuke, 2017/06/14 00:12:45]

this temporary variable helps with formatting.

+        [OCMockObject mockForProtocol:@protocol(TestedProtocol)];
+    helped_mock_ = [[MockClass alloc] initWithRepresentedObject:protocol_mock];
   }
 
   void TearDown() override {
     EXPECT_OCMOCK_VERIFY(helped_mock_);
     PlatformTest::TearDown();
   }
 
-  base::scoped_nsobject<id> helped_mock_;
+  id helped_mock_;
 };
 
 TEST_F(OCMockComplexTypeHelperTest, nilObjectStillWorks) {
   [[helped_mock_ expect] passObject:nil];
   [helped_mock_ passObject:nil];
 }
 
 TEST_F(OCMockComplexTypeHelperTest, anyObjectStillWorks) {
-  base::scoped_nsobject<id> someObject([[NSObject alloc] init]);
+  id someObject = [[NSObject alloc] init];
   [[helped_mock_ expect] passObject:OCMOCK_ANY];
   [helped_mock_ passObject:someObject];
 }
 
 TEST_F(OCMockComplexTypeHelperTest, complexType) {
   const SampleComplexType expected_value = {1, 1.0};
 
   complexTypeBlock block = ^(const SampleComplexType& value) {
     EXPECT_EQ(expected_value.number, value.number);
     EXPECT_EQ(expected_value.blob, value.blob);
@@ skipping 10 matching lines @@
   ScalarBlock block = ^(const ScalarType& value) {
     EXPECT_EQ(expected_value, value);
   };
   [helped_mock_ onSelector:@selector(passScalar:)
       callBlockExpectation:(id)block];
 
   [helped_mock_ passScalar:expected_value];
 }
 
 }  // namespace