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

Source/modules/webgl/CHROMIUMValuebuffer.cpp

Index: Source/modules/webgl/CHROMIUMValuebuffer.cpp
diff --git a/Source/modules/webgl/CHROMIUMValuebuffer.cpp b/Source/modules/webgl/CHROMIUMValuebuffer.cpp
index 025870849312df8673516b4e1f7130d8cbdc75c3..1ab5b09099e0f20ffbab0cf28068fdc456e09324 100644
--- a/Source/modules/webgl/CHROMIUMValuebuffer.cpp
+++ b/Source/modules/webgl/CHROMIUMValuebuffer.cpp
@@ -10,16 +10,14 @@
 
 namespace blink {
 
-PassRefPtrWillBeRawPtr<CHROMIUMValuebuffer> CHROMIUMValuebuffer::create(WebGLRenderingContextBase* ctx)
+CHROMIUMValuebuffer* CHROMIUMValuebuffer::create(WebGLRenderingContextBase* ctx)
 {
-    return adoptRefWillBeNoop(new CHROMIUMValuebuffer(ctx));
+    return new CHROMIUMValuebuffer(ctx);
 }
 
 CHROMIUMValuebuffer::~CHROMIUMValuebuffer()
 {
-    // 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