Move LoadProgressTracker to the browser process.

content/browser/renderer_host/render_view_host_delegate.h

Index: content/browser/renderer_host/render_view_host_delegate.h
diff --git a/content/browser/renderer_host/render_view_host_delegate.h b/content/browser/renderer_host/render_view_host_delegate.h
index bfa45e8f693244f692dbc3fe563edc870140a155..46dd7ef82d60aac4177333fe220286c4811ca6ae 100644
--- a/content/browser/renderer_host/render_view_host_delegate.h
+++ b/content/browser/renderer_host/render_view_host_delegate.h
@@ -135,11 +135,6 @@ class CONTENT_EXPORT RenderViewHostDelegate {
   // The pending page load was canceled.
   virtual void DidCancelLoading() {}
 
-  // The RenderView made progress loading a page's top frame.
-  // |progress| is a value between 0 (nothing loaded) to 1.0 (top frame
-  // entirely loaded).
-  virtual void DidChangeLoadProgress(double progress) {}
-
   // The RenderView's main frame document element is ready. This happens when
   // the document has finished parsing.
   virtual void DocumentAvailableInMainFrame(RenderViewHost* render_view_host) {}