[wrapper-tracing] Add tracing to WebGLRenderingContextBase and friends

third_party/WebKit/Source/modules/webgl/WebGL2RenderingContext.cpp

Index: third_party/WebKit/Source/modules/webgl/WebGL2RenderingContext.cpp
diff --git a/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContext.cpp b/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContext.cpp
index 59d97caa68b5c97497ee1d5ebb1a6254cc062bfd..845bf6c4049f88a1848c3a42e4bcaff23d5921e7 100644
--- a/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContext.cpp
+++ b/third_party/WebKit/Source/modules/webgl/WebGL2RenderingContext.cpp
@@ -164,6 +164,7 @@ DEFINE_TRACE_WRAPPERS(WebGL2RenderingContext) {
   visitor->traceWrappers(m_webglDebugRendererInfo);
   visitor->traceWrappers(m_webglDebugShaders);
   visitor->traceWrappers(m_webglLoseContext);
+  WebGL2RenderingContextBase::traceWrappers(visitor);

[Ken Russell (switch to Gerrit), 2016/10/06 19:05:14]

The fact that this bug could happen is an indication that we should strive to
eliminate duplicated code between DEFINE_TRACE and DEFINE_TRACE_WRAPPERS. See
below.

[Michael Lippautz, 2016/10/06 19:58:13]

Acknowledged.

 }
 
 }  // namespace blink