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

Source/modules/webgl/WebGL2RenderingContext.h

Index: Source/modules/webgl/WebGL2RenderingContext.h
diff --git a/Source/modules/webgl/WebGL2RenderingContext.h b/Source/modules/webgl/WebGL2RenderingContext.h
index 826e39204645f5917363bdbc6829288a80ebe1d2..c92160fa2c254fa08a0543b059a44c28c5a10dd0 100644
--- a/Source/modules/webgl/WebGL2RenderingContext.h
+++ b/Source/modules/webgl/WebGL2RenderingContext.h
@@ -38,16 +38,16 @@
 protected:
     WebGL2RenderingContext(HTMLCanvasElement* passedCanvas, PassOwnPtr<WebGraphicsContext3D>, const WebGLContextAttributes& requestedAttributes);
 
-    PersistentWillBeMember<CHROMIUMSubscribeUniform> m_chromiumSubscribeUniform;
-    PersistentWillBeMember<EXTTextureFilterAnisotropic> m_extTextureFilterAnisotropic;
-    PersistentWillBeMember<OESTextureFloatLinear> m_oesTextureFloatLinear;
-    PersistentWillBeMember<WebGLCompressedTextureATC> m_webglCompressedTextureATC;
-    PersistentWillBeMember<WebGLCompressedTextureETC1> m_webglCompressedTextureETC1;
-    PersistentWillBeMember<WebGLCompressedTexturePVRTC> m_webglCompressedTexturePVRTC;
-    PersistentWillBeMember<WebGLCompressedTextureS3TC> m_webglCompressedTextureS3TC;
-    PersistentWillBeMember<WebGLDebugRendererInfo> m_webglDebugRendererInfo;
-    PersistentWillBeMember<WebGLDebugShaders> m_webglDebugShaders;
-    PersistentWillBeMember<WebGLLoseContext> m_webglLoseContext;
+    RefPtrWillBeMember<CHROMIUMSubscribeUniform> m_chromiumSubscribeUniform;
+    RefPtrWillBeMember<EXTTextureFilterAnisotropic> m_extTextureFilterAnisotropic;
+    RefPtrWillBeMember<OESTextureFloatLinear> m_oesTextureFloatLinear;
+    RefPtrWillBeMember<WebGLCompressedTextureATC> m_webglCompressedTextureATC;
+    RefPtrWillBeMember<WebGLCompressedTextureETC1> m_webglCompressedTextureETC1;
+    RefPtrWillBeMember<WebGLCompressedTexturePVRTC> m_webglCompressedTexturePVRTC;
+    RefPtrWillBeMember<WebGLCompressedTextureS3TC> m_webglCompressedTextureS3TC;
+    RefPtrWillBeMember<WebGLDebugRendererInfo> m_webglDebugRendererInfo;
+    RefPtrWillBeMember<WebGLDebugShaders> m_webglDebugShaders;
+    RefPtrWillBeMember<WebGLLoseContext> m_webglLoseContext;
 };
 
 DEFINE_TYPE_CASTS(WebGL2RenderingContext, CanvasRenderingContext, context,