Initial checkin of gRPC to third_party/

third_party/grpc/src/objective-c/RxLibrary/GRXWriteable.m

Index: third_party/grpc/src/objective-c/RxLibrary/GRXWriteable.m
diff --git a/third_party/WebKit/Source/core/frame/DOMWindowBase64.h b/third_party/grpc/src/objective-c/RxLibrary/GRXWriteable.m
similarity index 53%
copy from third_party/WebKit/Source/core/frame/DOMWindowBase64.h
copy to third_party/grpc/src/objective-c/RxLibrary/GRXWriteable.m
index 2854ab37f6c60b55829ea7d87985e91696f8aa9f..2729d62b72f2c174f6fc2fa217af22093d847837 100644
--- a/third_party/WebKit/Source/core/frame/DOMWindowBase64.h
+++ b/third_party/grpc/src/objective-c/RxLibrary/GRXWriteable.m
@@ -1,7 +1,7 @@
 /*
- * Copyright (C) 2006, 2007, 2008, 2010 Apple Inc. All rights reserved.
- * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
- * Copyright (C) 2013 Samsung Electronics. All rights reserved.
+ *
+ * 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
@@ -28,23 +28,63 @@
  * 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.
+ *
  */
 
-#ifndef DOMWindowBase64_h
-#define DOMWindowBase64_h
+#import "GRXWriteable.h"
+
+@implementation GRXWriteable {
+  GRXValueHandler _valueHandler;
+  GRXCompletionHandler _completionHandler;
+}
 
-#include "wtf/text/WTFString.h"
++ (instancetype)writeableWithSingleHandler:(GRXSingleHandler)handler {
+  if (!handler) {
+    return [[self alloc] init];
+  }
+  return [[self alloc] initWithValueHandler:^(id value) {
+    handler(value, nil);
+  } completionHandler:^(NSError *errorOrNil) {
+    if (errorOrNil) {
+      handler(nil, errorOrNil);
+    }
+  }];
+}
 
-namespace blink {
++ (instancetype)writeableWithEventHandler:(GRXEventHandler)handler {
+  if (!handler) {
+    return [[self alloc] init];
+  }
+  return [[self alloc] initWithValueHandler:^(id value) {
+    handler(NO, value, nil);
+  } completionHandler:^(NSError *errorOrNil) {
+    handler(YES, nil, errorOrNil);
+  }];
+}
 
-class ExceptionState;
+- (instancetype)init {
+  return [self initWithValueHandler:nil completionHandler:nil];
+}
 
-class DOMWindowBase64 {
-public:
-    String btoa(const String& stringToEncode, ExceptionState&);
-    String atob(const String& encodedString, ExceptionState&);
-};
+// Designated initializer
+- (instancetype)initWithValueHandler:(GRXValueHandler)valueHandler
+                   completionHandler:(GRXCompletionHandler)completionHandler {
+  if ((self = [super init])) {
+    _valueHandler = valueHandler;
+    _completionHandler = completionHandler;
+  }
+  return self;
+}
 
-} // namespace blink
+- (void)writeValue:(id)value {
+  if (_valueHandler) {
+    _valueHandler(value);
+  }
+}
 
-#endif // DOMWindowBase64_h
+- (void)writesFinishedWithError:(NSError *)errorOrNil {
+  if (_completionHandler) {
+    _completionHandler(errorOrNil);
+  }
+}
+@end