Revert r194865 and r194874.

This change is incorrect. If you delete virtual destructor of both a base class
and a subclass, then the following code:
  Base *foo = new Child();
  delete foo;
will not cause the destructor for members of Child class. As a result, I observe
plently of memory leaks. Notable examples I investigated are:
ObjectBuffer and ObjectBufferStream, AttributeImpl and StringSAttributeImpl.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194997 91177308-0d34-0410-b5e6-96231b3b80d8

utils/unittest/googletest/include/gtest/gtest-test-part.h

@@ -142,7 +142,7 @@ class GTEST_API_ TestPartResultArray {
 // This interface knows how to report a test part result.
 class TestPartResultReporterInterface {
  public:
-  virtual ~TestPartResultReporterInterface();
+  virtual ~TestPartResultReporterInterface() {}
 
   virtual void ReportTestPartResult(const TestPartResult& result) = 0;
 };

utils/unittest/googletest/include/gtest/gtest.h

@@ -910,7 +910,7 @@ class GTEST_API_ TestCase {
 class Environment {
  public:
   // The d'tor is virtual as we need to subclass Environment.
-  virtual ~Environment();
+  virtual ~Environment() {}
 
   // Override this to define how to set up the environment.
   virtual void SetUp() {}
@@ -928,7 +928,7 @@ class Environment {
 // the order the corresponding events are fired.
 class TestEventListener {
  public:
-  virtual ~TestEventListener();
+  virtual ~TestEventListener() {}
 
   // Fired before any test activity starts.
   virtual void OnTestProgramStart(const UnitTest& unit_test) = 0;
@@ -980,7 +980,6 @@ class TestEventListener {
 // comments about each method please see the definition of TestEventListener
 // above.
 class EmptyTestEventListener : public TestEventListener {
-  virtual void anchor();
  public:
   virtual void OnTestProgramStart(const UnitTest& /*unit_test*/) {}
   virtual void OnTestIterationStart(const UnitTest& /*unit_test*/,

utils/unittest/googletest/include/gtest/internal/gtest-death-test-internal.h

@@ -79,7 +79,7 @@ class GTEST_API_ DeathTest {
   static bool Create(const char* statement, const RE* regex,
                      const char* file, int line, DeathTest** test);
   DeathTest();
-  virtual ~DeathTest();
+  virtual ~DeathTest() { }
 
   // A helper class that aborts a death test when it's deleted.
   class ReturnSentinel {
@@ -139,7 +139,7 @@ class GTEST_API_ DeathTest {
 // Factory interface for death tests.  May be mocked out for testing.
 class DeathTestFactory {
  public:
-  virtual ~DeathTestFactory();
+  virtual ~DeathTestFactory() { }
   virtual bool Create(const char* statement, const RE* regex,
                       const char* file, int line, DeathTest** test) = 0;
 };

utils/unittest/googletest/include/gtest/internal/gtest-internal.h

@@ -105,7 +105,6 @@
 #if !GTEST_NO_LLVM_RAW_OSTREAM
 namespace llvm {
 class convertible_fwd_ostream : public std::ostream {
-  virtual void anchor();
   raw_os_ostream ros_;
 
 public:
@@ -537,7 +536,7 @@ GTEST_API_ TypeId GetTestTypeId();
 // of a Test object.
 class TestFactoryBase {
  public:
-  virtual ~TestFactoryBase();
+  virtual ~TestFactoryBase() {}
 
   // Creates a test instance to run. The instance is both created and destroyed
   // within TestInfoImpl::Run()

utils/unittest/googletest/include/gtest/internal/gtest-param-util.h

@@ -414,7 +414,7 @@ class TestMetaFactory
 // and calls RegisterTests() on each of them when asked.
 class ParameterizedTestCaseInfoBase {
  public:
-  virtual ~ParameterizedTestCaseInfoBase();
+  virtual ~ParameterizedTestCaseInfoBase() {}
 
   // Base part of test case name for display purposes.
   virtual const string& GetTestCaseName() const = 0;

utils/unittest/googletest/include/gtest/internal/gtest-port.h

@@ -1116,7 +1116,7 @@ class Notification {
 // problem.
 class ThreadWithParamBase {
  public:
-  virtual ~ThreadWithParamBase();
+  virtual ~ThreadWithParamBase() {}
   virtual void Run() = 0;
 };
 
@@ -1290,7 +1290,7 @@ typedef GTestMutexLock MutexLock;
 // ThreadLocalValueHolderBase.
 class ThreadLocalValueHolderBase {
  public:
-  virtual ~ThreadLocalValueHolderBase();
+  virtual ~ThreadLocalValueHolderBase() {}
 };
 
 // Called by pthread to delete thread-local data stored by