[Oilpan] Migrate classes under module/webgl onto oilpan heap

Source/modules/webgl/WebGLTransformFeedback.cpp

Index: Source/modules/webgl/WebGLTransformFeedback.cpp
diff --git a/Source/modules/webgl/WebGLTransformFeedback.cpp b/Source/modules/webgl/WebGLTransformFeedback.cpp
index fe69008fa0213e00f90bcc4c73b5d924b7035ebf..7fbdd635a001675a06c11baff22670cd404c2bee 100644
--- a/Source/modules/webgl/WebGLTransformFeedback.cpp
+++ b/Source/modules/webgl/WebGLTransformFeedback.cpp
@@ -10,16 +10,14 @@
 
 namespace blink {
 
-PassRefPtrWillBeRawPtr<WebGLTransformFeedback> WebGLTransformFeedback::create(WebGL2RenderingContextBase* ctx)
+WebGLTransformFeedback* WebGLTransformFeedback::create(WebGL2RenderingContextBase* ctx)
 {
-    return adoptRefWillBeNoop(new WebGLTransformFeedback(ctx));
+    return new WebGLTransformFeedback(ctx);
 }
 
 WebGLTransformFeedback::~WebGLTransformFeedback()
 {
-    // Always call detach here to ensure that platform object deletion
-    // happens with Oilpan enabled. It keeps the code regular to do it
-    // with or without Oilpan enabled.
+    // Call detach here to ensure that platform object deletion happens.
     //
     // See comment in WebGLBuffer's destructor for additional
     // information on why this is done for WebGLSharedObject-derived