Move extensions bindings code out of //chrome

extensions/renderer/content_watcher.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROME_RENDERER_EXTENSIONS_CONTENT_WATCHER_H_
-#define CHROME_RENDERER_EXTENSIONS_CONTENT_WATCHER_H_
+#ifndef EXTENSIONS_RENDERER_CONTENT_WATCHER_H_
+#define EXTENSIONS_RENDERER_CONTENT_WATCHER_H_
 
 #include <map>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "third_party/WebKit/public/platform/WebVector.h"
 
 namespace blink {
 class WebFrame;
@@ skipping 44 matching lines @@
   // ExtensionHostMsg_OnWatchedPageChange back to the browser.
   blink::WebVector<blink::WebString> css_selectors_;
 
   // Maps live WebFrames to the set of CSS selectors they match. Blink sends
   // back diffs, which we apply to these sets.
   std::map<blink::WebFrame*, std::set<std::string> > matching_selectors_;
 };
 
 }  // namespace extensions
 
-#endif  // CHROME_RENDERER_EXTENSIONS_CONTENT_WATCHER_H_
+#endif  // EXTENSIONS_RENDERER_CONTENT_WATCHER_H_