DrawingBuffer: Clean up GL state restoration

third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp

Index: third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp
diff --git a/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp b/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp
index 7770ea6409f2d0356bcfc5d663b7569261ffab92..ddaf9b3c1e61432ebe9f047efb625cfdfe04c4c7 100644
--- a/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp
+++ b/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContextBase.cpp
@@ -3690,7 +3690,6 @@ void WebGL2RenderingContextBase::deleteFramebuffer(
     m_readFramebufferBinding = nullptr;
   }
   if (target) {
-    drawingBuffer()->setFramebufferBinding(target, 0);
     // Have to call drawingBuffer()->bind() here to bind back to internal fbo.
     drawingBuffer()->bind(target);
   }
@@ -4723,4 +4722,12 @@ WebGL2RenderingContextBase::getUnpackPixelStoreParams(
   return params;
 }
 
+void WebGL2RenderingContextBase::
+    DrawingBufferClientRestorePixelUnpackBufferBinding() {
+  if (!contextGL())
+    return;
+  contextGL()->BindBuffer(GL_PIXEL_UNPACK_BUFFER,
+                          objectOrZero(m_boundPixelUnpackBuffer.get()));
+}
+
 }  // namespace blink