| Index: components/plugins/renderer/webview_plugin.cc
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| diff --git a/components/plugins/renderer/webview_plugin.cc b/components/plugins/renderer/webview_plugin.cc
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| index 075515a0779ff784b51c27f377e22cf38aba4a59..a958c6d7730c0285952fc2460114fdf8207f324f 100644
 | 
| --- a/components/plugins/renderer/webview_plugin.cc
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| +++ b/components/plugins/renderer/webview_plugin.cc
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| @@ -317,6 +317,7 @@ void WebViewPlugin::WebViewHelper::scheduleAnimation() {
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|  
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|  void WebViewPlugin::WebViewHelper::didClearWindowObject(
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|      WebLocalFrame* frame) {
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| +  DCHECK_EQ(frame, web_view_->mainFrame());
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|    if (!plugin_->delegate_)
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|      return;
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|  
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| 
 |