Initial checkin of gRPC to third_party/

third_party/grpc/src/objective-c/RxLibrary/GRXWriter+Immediate.h

Index: third_party/grpc/src/objective-c/RxLibrary/GRXWriter+Immediate.h
diff --git a/third_party/WebKit/Source/modules/webdatabase/SQLTransactionClient.h b/third_party/grpc/src/objective-c/RxLibrary/GRXWriter+Immediate.h
similarity index 50%
copy from third_party/WebKit/Source/modules/webdatabase/SQLTransactionClient.h
copy to third_party/grpc/src/objective-c/RxLibrary/GRXWriter+Immediate.h
index fbb8d7b8582b8370265e71150fd5646e558191df..be880151f4f79ff49f5ad50a38d76ac5bc7d2fa6 100644
--- a/third_party/WebKit/Source/modules/webdatabase/SQLTransactionClient.h
+++ b/third_party/grpc/src/objective-c/RxLibrary/GRXWriter+Immediate.h
@@ -1,5 +1,7 @@
 /*
- * Copyright (C) 2009 Google Inc. 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
@@ -26,28 +28,51 @@
  * 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 SQLTransactionClient_h
-#define SQLTransactionClient_h
+#import "GRXWriter.h"
 
-#include "wtf/Allocator.h"
-#include "wtf/Noncopyable.h"
+@interface GRXWriter (Immediate)
 
-namespace blink {
+/**
+ * Returns a writer that pulls values from the passed NSEnumerator instance and pushes them to
+ * its writeable. The NSEnumerator is released when it finishes.
+ */
++ (instancetype)writerWithEnumerator:(NSEnumerator *)enumerator;
 
-class Database;
+/**
+ * Returns a writer that pushes to its writeable the successive values returned by the passed
+ * block. When the block first returns nil, it is released.
+ */
++ (instancetype)writerWithValueSupplier:(id (^)())block;
 
-// A client to the SQLTransaction class. Allows SQLTransaction to notify interested
-// parties that certain things have happened in a transaction.
-class SQLTransactionClient {
-    WTF_MAKE_NONCOPYABLE(SQLTransactionClient); USING_FAST_MALLOC(SQLTransactionClient);
-public:
-    SQLTransactionClient() { }
-    void didCommitWriteTransaction(Database*);
-    bool didExceedQuota(Database*);
-};
+/**
+ * Returns a writer that iterates over the values of the passed container and pushes them to
+ * its writeable. The container is released when the iteration is over.
+ *
+ * Note that the usual speed gain of NSFastEnumeration over NSEnumerator results from not having to
+ * call one method per element. Because GRXWriteable instances accept values one by one, that speed
+ * gain doesn't happen here.
+ */
++ (instancetype)writerWithContainer:(id<NSFastEnumeration>)container;
 
-} // namespace blink
+/**
+ * Returns a writer that sends the passed value to its writeable and then finishes (releasing the
+ * value).
+ */
++ (instancetype)writerWithValue:(id)value;
+
+/**
+ * Returns a writer that, as part of its start method, sends the passed error to the writeable
+ * (then releasing the error).
+ */
++ (instancetype)writerWithError:(NSError *)error;
+
+/**
+ * Returns a writer that, as part of its start method, finishes immediately without sending any
+ * values to its writeable.
+ */
++ (instancetype)emptyWriter;
 
-#endif // SQLTransactionClient_h
+@end