Enable handle verifier for tests and add some tests.

base/win/scoped_handle.cc

Index: base/win/scoped_handle.cc
diff --git a/base/win/scoped_handle.cc b/base/win/scoped_handle.cc
index 9c21603a0e8768e0466c7dba764c944ad26102cb..debe223795ce0f28a6211ccf4c96115c41bd106c 100644
--- a/base/win/scoped_handle.cc
+++ b/base/win/scoped_handle.cc
@@ -44,7 +44,7 @@ base::LazyInstance<NativeLock>::Leaky g_lock = LAZY_INSTANCE_INITIALIZER;
 
 bool CloseHandleWrapper(HANDLE handle) {
   if (!::CloseHandle(handle))
-    CHECK(false);
+    LOG(FATAL) << "CloseHandle failed.";
   return true;
 }
 
@@ -166,7 +166,7 @@ void ActiveVerifier::StartTracking(HANDLE handle, const void* owner,
   if (!result.second) {
     Info other = result.first->second;
     base::debug::Alias(&other);
-    CHECK(false);
+    LOG(FATAL) << "Attempt to start tracking already tracked handle.";
   }
 }
 
@@ -178,12 +178,12 @@ void ActiveVerifier::StopTracking(HANDLE handle, const void* owner,
   AutoNativeLock lock(*lock_);
   HandleMap::iterator i = map_.find(handle);
   if (i == map_.end())
-    CHECK(false);
+    LOG(FATAL) << "Attempting to close an untracked handle.";
 
   Info other = i->second;
   if (other.owner != owner) {
     base::debug::Alias(&other);
-    CHECK(false);
+    LOG(FATAL) << "Attempting to close a handle not owned by opener.";
   }
 
   map_.erase(i);
@@ -207,7 +207,7 @@ void ActiveVerifier::OnHandleBeingClosed(HANDLE handle) {
 
   Info other = i->second;
   base::debug::Alias(&other);
-  CHECK(false);
+  LOG(FATAL) << "CloseHandle called on tracked handle.";
 }
 
 }  // namespace