Add drawImage() originClean() getSecurityOrigin() to OffscreenCanvas

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

Index: third_party/WebKit/Source/bindings/core/v8/ScriptValueSerializer.cpp
diff --git a/third_party/WebKit/Source/bindings/core/v8/ScriptValueSerializer.cpp b/third_party/WebKit/Source/bindings/core/v8/ScriptValueSerializer.cpp
index 94a19886750e5a04748ff31794f0f82474640b66..ff381edc4ba98c0b04f460f9cd2aeaec3c02e9d2 100644
--- a/third_party/WebKit/Source/bindings/core/v8/ScriptValueSerializer.cpp
+++ b/third_party/WebKit/Source/bindings/core/v8/ScriptValueSerializer.cpp
@@ -2280,7 +2280,8 @@ bool ScriptValueDeserializer::tryGetTransferredSharedArrayBuffer(uint32_t index,
 
 bool ScriptValueDeserializer::tryGetTransferredOffscreenCanvas(uint32_t index, uint32_t width, uint32_t height, uint32_t id, v8::Local<v8::Value>* object)
 {
-    OffscreenCanvas* offscreenCanvas = OffscreenCanvas::create(width, height);
+    ExecutionContext* executionContext = ScriptState::current(v8::Isolate::GetCurrent())->getExecutionContext();

[haraken, 2016/04/28 17:40:41]

Use m_reader.scriptState() instead.

(Please don't use ScriptState::current unless you understand what it returns --
although it will return a correct context in this specific case.)

[xlai (Olivia), 2016/04/28 18:38:16]

Oops I thought ScriptState::current() can be used as long as it's in binding
layer. Had changed this part accordingly.

+    OffscreenCanvas* offscreenCanvas = OffscreenCanvas::create(executionContext, width, height);
     offscreenCanvas->setAssociatedCanvasId(id);
     *object = toV8(offscreenCanvas, m_reader.getScriptState());
     if ((*object).IsEmpty())