Initial checkin of gRPC to third_party/

third_party/grpc/src/objective-c/RxLibrary/private/GRXNSScalarEnumerator.m

Index: third_party/grpc/src/objective-c/RxLibrary/private/GRXNSScalarEnumerator.m
diff --git a/third_party/tcmalloc/chromium/src/google/heap-profiler.h b/third_party/grpc/src/objective-c/RxLibrary/private/GRXNSScalarEnumerator.m
similarity index 78%
copy from third_party/tcmalloc/chromium/src/google/heap-profiler.h
copy to third_party/grpc/src/objective-c/RxLibrary/private/GRXNSScalarEnumerator.m
index be4395964f4767213744627b8a982d66de4f52c3..f323ea14e6f880c3bca3cdcf100ceda3e2876d6a 100644
--- a/third_party/tcmalloc/chromium/src/google/heap-profiler.h
+++ b/third_party/grpc/src/objective-c/RxLibrary/private/GRXNSScalarEnumerator.m
@@ -1,10 +1,12 @@
-/* Copyright (c) 2005, Google Inc.
+/*
+ *
+ * Copyright 2015, Google Inc.
  * All rights reserved.
- * 
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
- * 
+ *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ -14,7 +16,7 @@
  *     * Neither the name of Google Inc. nor the names of its
  * contributors may be used to endorse or promote products derived from
  * this software without specific prior written permission.
- * 
+ *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
@@ -26,9 +28,30 @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
  */
 
-/* The code has moved to gperftools/.  Use that include-directory for
- * new code.
- */
-#include <gperftools/heap-profiler.h>
+#import "GRXNSScalarEnumerator.h"
+
+@implementation GRXNSScalarEnumerator {
+  id _value;
+}
+
+- (instancetype)init {
+  return [self initWithValue:nil];
+}
+
+// Designated initializer.
+- (instancetype)initWithValue:(id)value {
+  if ((self = [super init])) {
+    _value = value;
+  }
+  return self;
+}
+
+- (id)nextObject {
+  id value = _value;
+  _value = nil;
+  return value;
+}
+@end