cc: Don't ManageTiles twice in one frame
Any external callers of ManageTiles should inform the Scheduler that
ManageTiles happened so that (1) it can clear the "needs manage tiles"
flag and (2) it can avoid doing a second ManageTiles on the same frame.
Other than after commit, where ManageTiles needs to be called
immediately in order to kick off new raster tasks (or determine that no
raster tasks are required to activate the tree), ManageTiles just needs
to be called periodically to keep the raster jobs working on the most
important content. Delaying the periodic caller to prevent these bad
frames with commits is a worthwhile tradeoff.
[email protected]
BUG=314882
Review URL: https://codereview.chromium.org/45923005
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233111 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/cc/trees/single_thread_proxy.h b/cc/trees/single_thread_proxy.h
index 843be729..e5b706f 100644
--- a/cc/trees/single_thread_proxy.h
+++ b/cc/trees/single_thread_proxy.h
@@ -73,6 +73,7 @@
virtual void RequestScrollbarAnimationOnImplThread(base::TimeDelta delay)
OVERRIDE {}
virtual void DidActivatePendingTree() OVERRIDE {}
+ virtual void DidManageTiles() OVERRIDE {}
// Called by the legacy path where RenderWidget does the scheduling.
void CompositeImmediately(base::TimeTicks frame_begin_time);
