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 845de4f444f1dd5c4a0b77ffe448dc5d3d5d6bb4..dbb2e74d6bc0a9003a094c23da6f46a1de96000e 100644
--- a/content/browser/renderer_host/render_view_host_delegate.h
+++ b/content/browser/renderer_host/render_view_host_delegate.h
@@ -124,11 +124,6 @@ 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) {}