Add methods for creating V8 extras-based ReadableStreams from C++

third_party/WebKit/Source/bindings/core/v8/ReadableStreamOperations.h

Index: third_party/WebKit/Source/bindings/core/v8/ReadableStreamOperations.h
diff --git a/third_party/WebKit/Source/bindings/core/v8/ReadableStreamOperations.h b/third_party/WebKit/Source/bindings/core/v8/ReadableStreamOperations.h
index b456fb9eeea0b460dccc51535727290e2cbf9935..5c1530e6bdf617151f318e1ab7f40706fecf8b8b 100644
--- a/third_party/WebKit/Source/bindings/core/v8/ReadableStreamOperations.h
+++ b/third_party/WebKit/Source/bindings/core/v8/ReadableStreamOperations.h
@@ -11,6 +11,7 @@
 
 namespace blink {
 
+class UnderlyingSourceBase;
 class ExceptionState;
 class ScriptState;
 
@@ -21,29 +22,35 @@ class ScriptState;
 class CORE_EXPORT ReadableStreamOperations {
     STATIC_ONLY(ReadableStreamOperations);
 public:
+    // createReadableStreamWithExternalController
+    static ScriptValue createReadableStream(ScriptState*, UnderlyingSourceBase*, ScriptValue strategy);
+
+    // createBuiltInCountQueuingStrategy
+    static ScriptValue createCountQueuingStrategy(ScriptState*, size_t highWaterMark);
+
     // AcquireReadableStreamReader
     // This function assumes |isReadableStream(stream)|.
     // Returns an empty value and throws an error via the ExceptionState when
     // errored.
-    static ScriptValue getReader(ScriptState*, v8::Local<v8::Value> stream, ExceptionState&);
+    static ScriptValue getReader(ScriptState*, ScriptValue stream, ExceptionState&);
 
     // IsReadableStream
-    static bool isReadableStream(ScriptState*, v8::Local<v8::Value>);
+    static bool isReadableStream(ScriptState*, ScriptValue);
 
     // IsReadableStreamDisturbed
     // This function assumes |isReadableStream(stream)|.
-    static bool isDisturbed(ScriptState*, v8::Local<v8::Value> stream);
+    static bool isDisturbed(ScriptState*, ScriptValue stream);
 
     // IsReadableStreamLocked
     // This function assumes |isReadableStream(stream)|.
-    static bool isLocked(ScriptState*, v8::Local<v8::Value> stream);
+    static bool isLocked(ScriptState*, ScriptValue stream);
 
     // IsReadableStreamReader
-    static bool isReadableStreamReader(ScriptState*, v8::Local<v8::Value>);
+    static bool isReadableStreamReader(ScriptState*, ScriptValue);
 
     // ReadFromReadableStreamReader
     // This function assumes |isReadableStreamReader(reader)|.
-    static ScriptPromise read(ScriptState*, v8::Local<v8::Value> reader);
+    static ScriptPromise read(ScriptState*, ScriptValue reader);
 };
 
 } // namespace blink