[ObjC ARC] Converts ios/chrome/browser/crash_report:unit_tests to ARC.

ios/chrome/browser/crash_report/breakpad_helper_unittest.mm

 // Copyright 2013 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.
 
-#include "base/mac/scoped_nsobject.h"
 #import "breakpad/src/client/ios/BreakpadController.h"
 #import "ios/chrome/browser/crash_report/breakpad_helper.h"
 #import "ios/chrome/test/base/scoped_block_swizzler.h"
 #import "ios/chrome/test/ocmock/OCMockObject+BreakpadControllerTesting.h"
 #include "testing/gtest/include/gtest/gtest.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
+
 namespace {
 
 const int kCrashReportCount = 3;
 NSString* const kUploadedInRecoveryMode = @"uploaded_in_recovery_mode";
 
 class BreakpadHelperTest : public PlatformTest {
  public:
   void SetUp() override {
     PlatformTest::SetUp();
 
-    mock_breakpad_controller_.reset(
-        [[OCMockObject mockForClass:[BreakpadController class]] retain]);
+    mock_breakpad_controller_ =
+        [OCMockObject mockForClass:[BreakpadController class]];
 
     // Swizzle +[BreakpadController sharedInstance] to return
     // |mock_breakpad_controller_| instead of the normal singleton instance.
     id implementation_block = ^BreakpadController*(id self) {
-      return mock_breakpad_controller_.get();
+      return mock_breakpad_controller_;
     };
     breakpad_controller_shared_instance_swizzler_.reset(new ScopedBlockSwizzler(
         [BreakpadController class], @selector(sharedInstance),
         implementation_block));
   }
 
   void TearDown() override {
     [[mock_breakpad_controller_ stub] stop];
     breakpad_helper::SetEnabled(false);
 
     PlatformTest::TearDown();
   }
 
  protected:
-  base::scoped_nsobject<id> mock_breakpad_controller_;
+  id mock_breakpad_controller_;
   std::unique_ptr<ScopedBlockSwizzler>
       breakpad_controller_shared_instance_swizzler_;
 };
 
 TEST_F(BreakpadHelperTest, BrowserState) {
   // Check that we do not overflow the size of a breakpad record.
   breakpad_helper::SetCurrentOrientation(3, 7);
 }
 
 TEST_F(BreakpadHelperTest, HorizontalSizeClass) {
   // Check that we do not overflow the size of a breakpad record.
   breakpad_helper::SetCurrentHorizontalSizeClass(2);
 }
 
 TEST_F(BreakpadHelperTest, GetCrashReportCount) {
   [mock_breakpad_controller_ cr_expectGetCrashReportCount:kCrashReportCount];
 
   // Verify that breakpad_helper::GetCrashReportCount() returns the
   // crash report count that we arranged to pass to the result block that was
   // passed to -[BreakpadController getCrashReportCount:].
   EXPECT_EQ(kCrashReportCount, breakpad_helper::GetCrashReportCount());
-  EXPECT_OCMOCK_VERIFY(mock_breakpad_controller_.get());
+  EXPECT_OCMOCK_VERIFY(mock_breakpad_controller_);
 }
 
 TEST_F(BreakpadHelperTest, HasReportToUpload) {
   [mock_breakpad_controller_ cr_expectGetCrashReportCount:kCrashReportCount];
   EXPECT_TRUE(breakpad_helper::HasReportToUpload());
-  EXPECT_OCMOCK_VERIFY(mock_breakpad_controller_.get());
+  EXPECT_OCMOCK_VERIFY(mock_breakpad_controller_);
 
   [mock_breakpad_controller_ cr_expectGetCrashReportCount:0];
   EXPECT_FALSE(breakpad_helper::HasReportToUpload());
-  EXPECT_OCMOCK_VERIFY(mock_breakpad_controller_.get());
+  EXPECT_OCMOCK_VERIFY(mock_breakpad_controller_);
 }
 
 TEST_F(BreakpadHelperTest, IsUploadingEnabled) {
   // Test when crash reporter is disabled.
   breakpad_helper::SetEnabled(false);
   EXPECT_FALSE(breakpad_helper::IsUploadingEnabled());
 
   breakpad_helper::SetUploadingEnabled(false);
   EXPECT_FALSE(breakpad_helper::IsUploadingEnabled());
 
   breakpad_helper::SetUploadingEnabled(true);
   EXPECT_FALSE(breakpad_helper::IsUploadingEnabled());
 
   // Test when crash reporter is enabled.
   [[mock_breakpad_controller_ expect] start:NO];
   breakpad_helper::SetEnabled(true);
   EXPECT_FALSE(breakpad_helper::IsUploadingEnabled());
-  EXPECT_OCMOCK_VERIFY(mock_breakpad_controller_.get());
+  EXPECT_OCMOCK_VERIFY(mock_breakpad_controller_);
 
   [[mock_breakpad_controller_ expect] setUploadingEnabled:NO];
   breakpad_helper::SetUploadingEnabled(false);
   EXPECT_FALSE(breakpad_helper::IsUploadingEnabled());
-  EXPECT_OCMOCK_VERIFY(mock_breakpad_controller_.get());
+  EXPECT_OCMOCK_VERIFY(mock_breakpad_controller_);
 
   [[mock_breakpad_controller_ expect] setUploadingEnabled:YES];
   breakpad_helper::SetUploadingEnabled(true);
   EXPECT_TRUE(breakpad_helper::IsUploadingEnabled());
-  EXPECT_OCMOCK_VERIFY(mock_breakpad_controller_.get());
+  EXPECT_OCMOCK_VERIFY(mock_breakpad_controller_);
 }
 
 TEST_F(BreakpadHelperTest, StartUploadingReportsInRecoveryMode) {
   // Test when crash reporter is disabled.
   breakpad_helper::SetEnabled(false);
   breakpad_helper::StartUploadingReportsInRecoveryMode();
 
   // Test when crash reporter is enabled.
   [[mock_breakpad_controller_ expect] start:NO];
   breakpad_helper::SetEnabled(true);
-  EXPECT_OCMOCK_VERIFY(mock_breakpad_controller_.get());
+  EXPECT_OCMOCK_VERIFY(mock_breakpad_controller_);
 
   [[mock_breakpad_controller_ expect] stop];
   [[mock_breakpad_controller_ expect]
       setParametersToAddAtUploadTime:[OCMArg checkWithBlock:^(id value) {
         return [value isKindOfClass:[NSDictionary class]] &&
                        [value[kUploadedInRecoveryMode] isEqualToString:@"yes"]
                    ? YES
                    : NO;
       }]];
   [[mock_breakpad_controller_ expect] setUploadInterval:1];
   [[mock_breakpad_controller_ expect] start:NO];
   [[mock_breakpad_controller_ expect] setUploadingEnabled:YES];
   breakpad_helper::StartUploadingReportsInRecoveryMode();
-  EXPECT_OCMOCK_VERIFY(mock_breakpad_controller_.get());
+  EXPECT_OCMOCK_VERIFY(mock_breakpad_controller_);
 }
 
 TEST_F(BreakpadHelperTest, RestoreDefaultConfiguration) {
   // Test when crash reporter is disabled.
   breakpad_helper::SetEnabled(false);
   breakpad_helper::RestoreDefaultConfiguration();
 
   // Test when crash reporter is enabled.
   [[mock_breakpad_controller_ expect] start:NO];
   breakpad_helper::SetEnabled(true);
-  EXPECT_OCMOCK_VERIFY(mock_breakpad_controller_.get());
+  EXPECT_OCMOCK_VERIFY(mock_breakpad_controller_);
 
   [[mock_breakpad_controller_ expect] stop];
   [[mock_breakpad_controller_ expect] resetConfiguration];
   [[mock_breakpad_controller_ expect] start:NO];
   [[mock_breakpad_controller_ expect] setUploadingEnabled:NO];
   breakpad_helper::RestoreDefaultConfiguration();
-  EXPECT_OCMOCK_VERIFY(mock_breakpad_controller_.get());
+  EXPECT_OCMOCK_VERIFY(mock_breakpad_controller_);
 }
 
 }  // namespace