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diff --git a/chrome/renderer/chrome_render_observer.h b/chrome/renderer/chrome_render_observer.h
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+++ b/chrome/renderer/chrome_render_observer.h
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+// Copyright (c) 2011 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_CHROME_RENDER_OBSERVER_H_
+#define CHROME_RENDERER_CHROME_RENDER_OBSERVER_H_
+#pragma once
+
+#include "base/task.h"
+#include "content/renderer/render_view_observer.h"
+
+class SkBitmap;
+class TranslateHelper;
+struct ThumbnailScore;
+
+namespace WebKit {
+class WebView;
+}
+
+namespace safe_browsing {
+class PhishingClassifierDelegate;
+}
+
+// This class holds the Chrome specific parts of RenderView, and has the same
+// lifetime.
+class ChromeRenderObserver : public RenderViewObserver {
+ public:
+  // translate_helper and/or phishing_classifier can be NULL.
+  ChromeRenderObserver(
+      RenderView* render_view,
+      TranslateHelper* translate_helper,
+      safe_browsing::PhishingClassifierDelegate* phishing_classifier);
+  virtual ~ChromeRenderObserver();
+
+ private:
+  // RenderViewObserver implementation.
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
+  virtual void DidStopLoading() OVERRIDE;
+  virtual void DidCommitProvisionalLoad(WebKit::WebFrame* frame,
+                                        bool is_new_navigation) OVERRIDE;
+
+  void OnCaptureSnapshot();
+
+  // Captures the thumbnail and text contents for indexing for the given load
+  // ID. If the view's load ID is different than the parameter, this call is
+  // a NOP. Typically called on a timer, so the load ID may have changed in the
+  // meantime.
+  void CapturePageInfo(int load_id, bool preliminary_capture);
+
+  // Retrieves the text from the given frame contents, the page text up to the
+  // maximum amount kMaxIndexChars will be placed into the given buffer.
+  void CaptureText(WebKit::WebFrame* frame, string16* contents);
+
+  void CaptureThumbnail();
+
+  // Creates a thumbnail of |frame|'s contents resized to (|w|, |h|)
+  // and puts that in |thumbnail|. Thumbnail metadata goes in |score|.
+  bool CaptureFrameThumbnail(WebKit::WebView* view, int w, int h,
+                             SkBitmap* thumbnail,
+                             ThumbnailScore* score);
+
+  // Capture a snapshot of a view.  This is used to allow an extension
+  // to get a snapshot of a tab using chrome.tabs.captureVisibleTab().
+  bool CaptureSnapshot(WebKit::WebView* view, SkBitmap* snapshot);
+
+  // Has the same lifetime as us.
+  TranslateHelper* translate_helper_;
+  safe_browsing::PhishingClassifierDelegate* phishing_classifier_;
+  
+  // Page_id from the last page we indexed. This prevents us from indexing the
+  // same page twice in a row.
+  int32 last_indexed_page_id_;
+
+  ScopedRunnableMethodFactory<ChromeRenderObserver> page_info_method_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(ChromeRenderObserver);
+};
+
+#endif  // CHROME_RENDERER_CHROME_OBSERVER_H_