cc: Force an update on tile size after viewport resize

cc/trees/layer_tree_host_impl.cc

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/trees/layer_tree_host_impl.h"
 
 #include <algorithm>
 #include <limits>
 
 #include "base/basictypes.h"
@@ skipping 290 matching lines @@
   TRACE_EVENT0("cc", "LayerTreeHostImpl::CommitComplete");
 
   sync_tree()->set_needs_update_draw_properties();
 
   if (settings_.impl_side_painting) {
     // Impl-side painting needs an update immediately post-commit to have the
     // opportunity to create tilings.  Other paths can call UpdateDrawProperties
     // more lazily when needed prior to drawing.  Because invalidations may
     // be coming from the main thread, it's safe to do an update for lcd text
     // at this point and see if lcd text needs to be disabled on any layers.
-    bool update_lcd_text = true;
-    sync_tree()->UpdateDrawProperties(update_lcd_text);
+    bool first_update_after_commit = true;
+    sync_tree()->UpdateDrawProperties(first_update_after_commit);
     // Start working on newly created tiles immediately if needed.
     if (tile_manager_ && tile_priorities_dirty_)
       PrepareTiles();
     else
       NotifyReadyToActivate();
   } else {
     // If we're not in impl-side painting, the tree is immediately considered
     // active.
     ActivateSyncTree();
   }
@@ skipping 718 matching lines @@
   TRACE_EVENT1("cc",
                "LayerTreeHostImpl::PrepareToDraw",
                "SourceFrameNumber",
                active_tree_->source_frame_number());
   if (input_handler_client_)
     input_handler_client_->ReconcileElasticOverscrollAndRootScroll();
 
   UMA_HISTOGRAM_CUSTOM_COUNTS(
       "Compositing.NumActiveLayers", active_tree_->NumLayers(), 1, 400, 20);
 
-  bool update_lcd_text = false;
-  bool ok = active_tree_->UpdateDrawProperties(update_lcd_text);
+  bool first_update_after_commit = false;
+  bool ok = active_tree_->UpdateDrawProperties(first_update_after_commit);
   DCHECK(ok) << "UpdateDrawProperties failed during draw";
 
   // This will cause NotifyTileStateChanged() to be called for any visible tiles
   // that completed, which will add damage to the frame for them so they appear
   // as part of the current frame being drawn.
   if (tile_manager_)
     tile_manager_->UpdateVisibleTiles(global_tile_state_);
 
   frame->render_surface_layer_list = &active_tree_->RenderSurfaceLayerList();
   frame->render_passes.clear();
@@ skipping 2388 matching lines @@
     (*it)->OnSetNeedsRedrawOnImpl();
 }
 
 void LayerTreeHostImpl::NotifySwapPromiseMonitorsOfForwardingToMainThread() {
   std::set<SwapPromiseMonitor*>::iterator it = swap_promise_monitor_.begin();
   for (; it != swap_promise_monitor_.end(); it++)
     (*it)->OnForwardScrollUpdateToMainThreadOnImpl();
 }
 
 }  // namespace cc