IDL: Add [FlexibleArrayBufferView] and use for bufferSubData

Source/bindings/core/v8/V8Binding.h

 /*
 * Copyright (C) 2009 Google Inc. All rights reserved.
 * Copyright (C) 2012 Ericsson AB. 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.
@@ skipping 44 matching lines @@
 class DOMWindow;
 class EventListener;
 class EventTarget;
 class ExecutionContext;
 class ExceptionState;
 class Frame;
 class LocalDOMWindow;
 class LocalFrame;
 class NodeFilter;
 class XPathNSResolver;
+class FlexibleArrayBufferView;
 
 template <typename T>
 struct V8TypeOf {
     // |Type| provides C++ -> V8 type conversion for DOM wrappers.
     // The Blink binding code generator will generate specialized version of
     // V8TypeOf for each wrapper class.
     typedef void Type;
 };
 
 namespace TraceEvent {
@@ skipping 815 matching lines @@
 // Returns a V8 context associated with a Frame and a DOMWrapperWorld.
 // This method returns an empty context if the frame is already detached.
 CORE_EXPORT v8::Local<v8::Context> toV8Context(Frame*, DOMWrapperWorld&);
 
 // Returns the frame object of the window object associated with
 // a context, if the window is currently being displayed in a Frame.
 CORE_EXPORT Frame* toFrameIfNotDetached(v8::Handle<v8::Context>);
 
 CORE_EXPORT EventTarget* toEventTarget(v8::Isolate*, v8::Handle<v8::Value>);
 
+// If 'storage' is non-null, it must be large enough to copy all bytes in the
+// array buffer view into it.
+// Use SMALL_ARRAY_BUFFER_VIEW_STORAGE(v8Value) to allocate it using alloca() in
+// the callers stack frame.
+CORE_EXPORT void toFlexibleArrayBufferView(v8::Isolate*, v8::Handle<v8::Value>, FlexibleArrayBufferView&, void* storage = nullptr);
+
 // If the current context causes out of memory, JavaScript setting
 // is disabled and it returns true.
 bool handleOutOfMemory();
 void crashIfV8IsDead();
 
 inline bool isUndefinedOrNull(v8::Handle<v8::Value> value)
 {
     return value->IsNull() || value->IsUndefined();
 }
 v8::Handle<v8::Function> getBoundFunction(v8::Handle<v8::Function>);
@@ skipping 89 matching lines @@
 PassRefPtr<TraceEvent::ConvertableToTraceFormat> devToolsTraceEventData(v8::Isolate*, ExecutionContext*, v8::Handle<v8::Function>);
 
 // Callback functions used by generated code.
 CORE_EXPORT void v8ConstructorAttributeGetter(v8::Local<v8::Name> propertyName, const v8::PropertyCallbackInfo<v8::Value>&);
 
 typedef void (*InstallTemplateFunction)(v8::Local<v8::FunctionTemplate>, v8::Isolate*);
 
 } // namespace blink
 
 #endif // V8Binding_h