cc: Remove impl_transform_is_unknown argument from OcclusionTracker.

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 798 matching lines @@
           it->render_surface()->RenderPassId();
       RenderPass* contributing_render_pass =
           frame->render_passes_by_id[contributing_render_pass_id];
       AppendQuadsForRenderSurfaceLayer(target_render_pass,
                                        *it,
                                        contributing_render_pass,
                                        occlusion_tracker,
                                        &append_quads_data);
     } else if (it.represents_itself() && it->DrawsContent() &&
                !it->visible_content_rect().IsEmpty()) {
-      bool impl_draw_transform_is_unknown = false;
-      bool occluded = occlusion_tracker.Occluded(
-              it->render_target(),
-              it->visible_content_rect(),
-              it->draw_transform(),
-              impl_draw_transform_is_unknown);
+      bool occluded = occlusion_tracker.Occluded(it->render_target(),
+                                                 it->visible_content_rect(),
+                                                 it->draw_transform());
       if (!occluded && it->WillDraw(draw_mode, resource_provider_.get())) {
         DCHECK_EQ(active_tree_, it->layer_tree_impl());
 
         frame->will_draw_layers.push_back(*it);
 
         if (it->HasContributingDelegatedRenderPasses()) {
           RenderPass::Id contributing_render_pass_id =
               it->FirstContributingRenderPassId();
           while (frame->render_passes_by_id.find(contributing_render_pass_id) !=
                  frame->render_passes_by_id.end()) {
@@ skipping 2190 matching lines @@
   swap_promise_monitor_.erase(monitor);
 }
 
 void LayerTreeHostImpl::NotifySwapPromiseMonitorsOfSetNeedsRedraw() {
   std::set<SwapPromiseMonitor*>::iterator it = swap_promise_monitor_.begin();
   for (; it != swap_promise_monitor_.end(); it++)
     (*it)->OnSetNeedsRedrawOnImpl();
 }
 
 }  // namespace cc