Move LoadProgressTracker to the browser process.

content/browser/frame_host/render_frame_host_impl.cc

Index: content/browser/frame_host/render_frame_host_impl.cc
diff --git a/content/browser/frame_host/render_frame_host_impl.cc b/content/browser/frame_host/render_frame_host_impl.cc
index 06993931cba1750bd8883cce700e93d8bac6dcc9..fa13c63a547559ab42a78ee15e1184ede0c7ec31 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -278,6 +278,8 @@ bool RenderFrameHostImpl::OnMessageReceived(const IPC::Message &msg) {
                                 OnNavigate(msg))
     IPC_MESSAGE_HANDLER(FrameHostMsg_DidStartLoading, OnDidStartLoading)
     IPC_MESSAGE_HANDLER(FrameHostMsg_DidStopLoading, OnDidStopLoading)
+    IPC_MESSAGE_HANDLER(FrameHostMsg_DidChangeLoadProgress,
+                        OnDidChangeLoadProgress)
     IPC_MESSAGE_HANDLER(FrameHostMsg_OpenURL, OnOpenURL)
     IPC_MESSAGE_HANDLER(FrameHostMsg_BeforeUnload_ACK, OnBeforeUnloadACK)
     IPC_MESSAGE_HANDLER(FrameHostMsg_SwapOut_ACK, OnSwapOutACK)
@@ -510,11 +512,15 @@ void RenderFrameHostImpl::SwapOut() {
 }
 
 void RenderFrameHostImpl::OnDidStartLoading(bool to_different_document) {
-  delegate_->DidStartLoading(this, to_different_document);
+  frame_tree_node_->navigator()->DidStartLoading(this, to_different_document);
 }
 
 void RenderFrameHostImpl::OnDidStopLoading() {
-  delegate_->DidStopLoading(this);
+  frame_tree_node_->navigator()->DidStopLoading(this);
+}
+
+void RenderFrameHostImpl::OnDidChangeLoadProgress(double load_progress) {
+  frame_tree_node_->navigator()->DidChangeLoadProgress(this, load_progress);
 }
 
 void RenderFrameHostImpl::OnBeforeUnloadACK(
@@ -749,7 +755,7 @@ void RenderFrameHostImpl::Navigate(const FrameMsg_Navigate_Params& params) {
   // Blink doesn't send throb notifications for JavaScript URLs, so we
   // don't want to either.
   if (!params.url.SchemeIs(kJavaScriptScheme))
-    delegate_->DidStartLoading(this, true);
+    OnDidStartLoading(true);
 }
 
 void RenderFrameHostImpl::NavigateToURL(const GURL& url) {