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

third_party/WebKit/Source/modules/fetch/ReadableStreamDataConsumerHandle.cpp

Index: third_party/WebKit/Source/modules/fetch/ReadableStreamDataConsumerHandle.cpp
diff --git a/third_party/WebKit/Source/modules/fetch/ReadableStreamDataConsumerHandle.cpp b/third_party/WebKit/Source/modules/fetch/ReadableStreamDataConsumerHandle.cpp
index 707fba14451e5c246bde9f95c7f89375631d7c0d..656876e27b06a4590190875dc7cae76eaf415b67 100644
--- a/third_party/WebKit/Source/modules/fetch/ReadableStreamDataConsumerHandle.cpp
+++ b/third_party/WebKit/Source/modules/fetch/ReadableStreamDataConsumerHandle.cpp
@@ -132,7 +132,7 @@ public:
         RefPtr<ReadingContext> m_readingContext;
     };
 
-    static PassRefPtr<ReadingContext> create(ScriptState* scriptState, v8::Local<v8::Value> stream)
+    static PassRefPtr<ReadingContext> create(ScriptState* scriptState, ScriptValue stream)
     {
         return adoptRef(new ReadingContext(scriptState, stream));
     }
@@ -169,9 +169,7 @@ public:
             m_isReading = true;
             ScriptState::Scope scope(m_reader.scriptState());
             V8RecursionScope recursionScope(m_reader.isolate());
-            ReadableStreamOperations::read(m_reader.scriptState(), m_reader.v8Value()).then(
-                OnFulfilled::createFunction(m_reader.scriptState(), m_weakPtrFactory.createWeakPtr()),
-                OnRejected::createFunction(m_reader.scriptState(), m_weakPtrFactory.createWeakPtr()));
+            ReadableStreamOperations::read(m_reader.scriptState(), m_reader).then(OnFulfilled::createFunction(m_reader.scriptState(), m_weakPtrFactory.createWeakPtr()), OnRejected::createFunction(m_reader.scriptState(), m_weakPtrFactory.createWeakPtr()));
             // Note: Microtasks may run here.
         }
         m_isInRecursion = false;
@@ -239,7 +237,7 @@ public:
     }
 
 private:
-    ReadingContext(ScriptState* scriptState, v8::Local<v8::Value> stream)
+    ReadingContext(ScriptState* scriptState, ScriptValue stream)
         : m_client(nullptr)
         , m_weakPtrFactory(this)
         , m_pendingOffset(0)
@@ -273,7 +271,7 @@ private:
     bool m_isInRecursion;
 };
 
-ReadableStreamDataConsumerHandle::ReadableStreamDataConsumerHandle(ScriptState* scriptState, v8::Local<v8::Value> stream)
+ReadableStreamDataConsumerHandle::ReadableStreamDataConsumerHandle(ScriptState* scriptState, ScriptValue stream)
     : m_readingContext(ReadingContext::create(scriptState, stream))
 {
 }