Pass ResizeObserver as 'this' to callback

third_party/WebKit/Source/bindings/core/v8/V8ResizeObserverCallbackCustom.cpp

Index: third_party/WebKit/Source/bindings/core/v8/V8ResizeObserverCallbackCustom.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/V8ResizeObserverCallbackCustom.cpp b/third_party/WebKit/Source/bindings/core/v8/V8ResizeObserverCallbackCustom.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..d331bdc4bcd01879ceb071454ea743b82e5d427e
--- /dev/null
+++ b/third_party/WebKit/Source/bindings/core/v8/V8ResizeObserverCallbackCustom.cpp
@@ -0,0 +1,45 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "bindings/core/v8/V8ResizeObserverCallback.h"
+
+#include "bindings/core/v8/ScriptController.h"
+#include "bindings/core/v8/V8Binding.h"
+#include "bindings/core/v8/V8ResizeObserver.h"
+#include "bindings/core/v8/V8ResizeObserverEntry.h"
+#include "core/dom/ExecutionContext.h"
+
+namespace blink {
+
+void V8ResizeObserverCallback::handleEvent(const HeapVector<Member<ResizeObserverEntry>>& entries, ResizeObserver* observer)
+{
+    if (!canInvokeCallback())
+        return;
+
+    v8::Isolate* isolate = m_scriptState->isolate();
+
+    if (!m_scriptState->contextIsValid())
+        return;
+    ScriptState::Scope scope(m_scriptState.get());
+
+    if (m_callback.isEmpty())
+        return;
+
+    v8::Local<v8::Value> observerHandle = toV8(observer, m_scriptState->context()->Global(), m_scriptState->isolate());
+    if (!observerHandle->IsObject())
+        return;
+
+    v8::Local<v8::Object> thisObject = v8::Local<v8::Object>::Cast(observerHandle);
+    v8::Local<v8::Value> entriesHandle = toV8(entries, m_scriptState->context()->Global(), m_scriptState->isolate());
+    if (entriesHandle.IsEmpty())
+        return;
+    v8::Local<v8::Value> argv[] = { entriesHandle, observerHandle };
+
+    v8::TryCatch exceptionCatcher(m_scriptState->isolate());
+    exceptionCatcher.SetVerbose(true);
+    V8ScriptRunner::callFunction(m_callback.newLocal(isolate), getExecutionContext(), thisObject, WTF_ARRAY_LENGTH(argv), argv, isolate);
+}
+
+
+} // namespace blink