Make <webview> use out-of-process iframe architecture.

content/browser/web_contents/web_contents_node.h

Index: content/browser/web_contents/web_contents_node.h
diff --git a/content/browser/web_contents/web_contents_node.h b/content/browser/web_contents/web_contents_node.h
new file mode 100644
index 0000000000000000000000000000000000000000..3845ab1b14c8b68188627bb9229408cbcf5ce3b7
--- /dev/null
+++ b/content/browser/web_contents/web_contents_node.h
@@ -0,0 +1,26 @@
+#ifndef CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_NODE_H_
+#define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_NODE_H_
+
+namespace content {
+
+class WebContentsImpl;
+
+class WebContentsNode {

[Charlie Reis, 2015/04/08 23:42:11]

No one outside WebContentsImpl seems to need this.  Can we make it a private
struct within WebContentsImpl instead?

[lazyboy, 2015/04/14 01:38:04]

Done.

+ public:
+  WebContentsNode();
+  ~WebContentsNode();
+
+  void set_parent_web_contents(WebContentsImpl* parent_web_contents) {
+    parent_web_contents_ = parent_web_contents;
+  }
+  WebContentsImpl* parent_web_contents() {
+    return parent_web_contents_;
+  }
+
+ private:
+  WebContentsImpl* parent_web_contents_;
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_NODE_H_