| Index: third_party/WebKit/Source/modules/webgl/WebGLContextGroup.cpp
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| diff --git a/third_party/WebKit/Source/modules/webgl/WebGLContextGroup.cpp b/third_party/WebKit/Source/modules/webgl/WebGLContextGroup.cpp
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| index d8437939d8b11a132a3f1263a0298ad37d13524b..e2406d71941820713bca6b4258daf83fdccd70b1 100644
 | 
| --- a/third_party/WebKit/Source/modules/webgl/WebGLContextGroup.cpp
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| +++ b/third_party/WebKit/Source/modules/webgl/WebGLContextGroup.cpp
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| @@ -47,6 +47,7 @@ gpu::gles2::GLES2Interface* WebGLContextGroup::getAGLInterface() {
 | 
|  
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|  void WebGLContextGroup::addContext(WebGLRenderingContextBase* context) {
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|    m_contexts.add(context);
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| +  ScriptWrappableVisitor::writeBarrier(this, context);
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|  }
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|  
 | 
|  void WebGLContextGroup::loseContextGroup(
 | 
| 
 |