[Oilpan] Prepare full definition of classes before using Member

third_party/WebKit/Source/web/WebLocalFrameImpl.cpp

Index: third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp b/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
index 4cb7d027f8e9302666faadc7677f12e37094d8e5..7428894fcc501ea218c3a879b21f3205e2023bef 100644
--- a/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
+++ b/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
@@ -1836,6 +1836,11 @@ WebViewImpl* WebLocalFrameImpl::viewImpl() const
     return WebViewImpl::fromPage(frame()->page());
 }
 
+WebDevToolsAgentImpl* WebLocalFrameImpl::devToolsAgentImpl() const
+{
+    return m_devToolsAgent.get();
+}
+
 WebDataSourceImpl* WebLocalFrameImpl::dataSourceImpl() const
 {
     return static_cast<WebDataSourceImpl*>(dataSource());