Move DidStartLoading, DidStopLoading, DidChangeLoadProgress to RFHI.

content/browser/frame_host/frame_tree_node.cc

Index: content/browser/frame_host/frame_tree_node.cc
diff --git a/content/browser/frame_host/frame_tree_node.cc b/content/browser/frame_host/frame_tree_node.cc
index daf4a71255d6b8a9c6f30493364f25644dd18620..c17a405ac03899c909612d58053220b0227ef9ad 100644
--- a/content/browser/frame_host/frame_tree_node.cc
+++ b/content/browser/frame_host/frame_tree_node.cc
@@ -26,11 +26,14 @@ typedef base::hash_map<int64, FrameTreeNode*> FrameTreeNodeIDMap;
 base::LazyInstance<FrameTreeNodeIDMap> g_frame_tree_node_id_map =
     LAZY_INSTANCE_INITIALIZER;
 
-}  // namespace
+// These values indicate the loading progress status. The minimum progress
+// value matches what Blink's ProgressTracker has traditionally used for a
+// minimum progress value.
+static const double kLoadingProgressNotStarted = 0.0;
+static const double kLoadingProgressMinimum = 0.1;
+static const double kLoadingProgressDone = 1.0;
 
-const double FrameTreeNode::kLoadingProgressNotStarted = 0.0;
-const double FrameTreeNode::kLoadingProgressMinimum = 0.1;
-const double FrameTreeNode::kLoadingProgressDone = 1.0;
+}  // namespace
 
 int64 FrameTreeNode::next_frame_tree_node_id_ = 1;
 
@@ -174,4 +177,51 @@ bool FrameTreeNode::CommitPendingSandboxFlags() {
   return did_change_flags;
 }
 
+bool FrameTreeNode::HasStartedLoading() const {
+  return loading_progress_ != kLoadingProgressNotStarted;
+}
+
+void FrameTreeNode::ResetLoadingProgress() {
+  loading_progress_ = kLoadingProgressNotStarted;
+}
+
+void FrameTreeNode::DidStartLoading(bool to_different_document) {
+  // Any main frame load to a new document should reset the load progress since
+  // it will replace the current page and any frames. The WebContents will
+  // be notified when UpdateLoadProgress is called.
+  if (to_different_document && IsMainFrame())
+    frame_tree_->ResetLoadProgress();
+
+  // Notify the Navigator.
+  if (!frame_tree_->IsLoading())
+    navigator()->DidStartLoading(this, to_different_document);
+
+  // Notify the RenderFrameHostManager of the event.
+  render_manager()->OnDidStartLoading();
+
+  // Set initial load progress and update overall progress. This will notify
+  // the WebContents of the load progress change.
+  loading_progress_ = kLoadingProgressMinimum;
+  frame_tree_->UpdateLoadProgress();
+}
+
+void FrameTreeNode::DidStopLoading() {
+  // Notify the RenderFrameHostManager of the event.
+  render_manager()->OnDidStopLoading();
+
+  // Set final load progress and update overall progress. This will notify
+  // the WebContents of the load progress change.
+  loading_progress_ = kLoadingProgressDone;
+  frame_tree_->UpdateLoadProgress();
+
+  // Notify the Navigator.
+  if (!frame_tree_->IsLoading())
+    navigator()->DidStopLoading();
+}
+
+void FrameTreeNode::DidChangeLoadProgress(double load_progress) {
+  loading_progress_ = load_progress;
+  frame_tree_->UpdateLoadProgress();
+}
+
 }  // namespace content