Remove NULL ResourceProvider, TileManager early outs

cc/layers/picture_layer_impl.cc

 // Copyright 2012 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/layers/picture_layer_impl.h"
 
 #include <algorithm>
 
 #include "base/time.h"
 #include "cc/base/math_util.h"
@@ skipping 994 matching lines @@
   raster_source_scale_ = 0.f;
   raster_contents_scale_ = 0.f;
   low_res_raster_contents_scale_ = 0.f;
 }
 
 bool PictureLayerImpl::CanHaveTilings() const {
   if (!DrawsContent())
     return false;
   if (pile_->recorded_region().IsEmpty())
     return false;
-  if (!layer_tree_impl()->tile_manager())
-    return false;
   if (draw_properties().can_draw_directly_to_backbuffer &&
       layer_tree_impl()->settings().force_direct_layer_drawing)
     return false;
   return true;
 }
 
 bool PictureLayerImpl::CanHaveTilingWithScale(float contents_scale) const {
   if (!CanHaveTilings())
     return false;
   if (contents_scale < MinimumContentsScale())
@@ skipping 14 matching lines @@
   state->Set("tilings", tilings_->AsValue().release());
   state->Set("pictures", pile_->AsValue().release());
   state->Set("invalidation", invalidation_.AsValue().release());
 }
 
 size_t PictureLayerImpl::GPUMemoryUsageInBytes() const {
   return tilings_->GPUMemoryUsageInBytes();
 }
 
 }  // namespace cc