Revert of [Oilpan] Prepare full definition of classes before using Member

third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.cpp

Index: third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.cpp
diff --git a/third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.cpp b/third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.cpp
index bb263d73c8016261ed5832cd9d006433ff82e340..a9ecf18b72070af76ab0576e925bd967030c7db3 100644
--- a/third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.cpp
+++ b/third_party/WebKit/Source/modules/webgl/WebGLRenderingContextBase.cpp
@@ -121,22 +121,6 @@ WebGLRenderingContextBaseMap& forciblyEvictedContexts()
 
 } // namespace
 
-WebGLRenderingContextBase::ScopedDrawingBufferBinder::ScopedDrawingBufferBinder(DrawingBuffer* drawingBuffer, WebGLFramebuffer* framebufferBinding)
-    : m_drawingBuffer(drawingBuffer)
-    , m_readFramebufferBinding(framebufferBinding)
-{
-    // Commit DrawingBuffer if needed (e.g., for multisampling)
-    if (!m_readFramebufferBinding && m_drawingBuffer)
-        m_drawingBuffer->commit();
-}
-
-WebGLRenderingContextBase::ScopedDrawingBufferBinder::~ScopedDrawingBufferBinder()
-{
-    // Restore DrawingBuffer if needed
-    if (!m_readFramebufferBinding && m_drawingBuffer)
-        m_drawingBuffer->restoreFramebufferBindings();
-}
-
 void WebGLRenderingContextBase::forciblyLoseOldestContext(const String& reason)
 {
     WebGLRenderingContextBase* candidate = oldestContext();