cc: Add a flag to layers that returns true if the layer is in RSLL.

cc/trees/layer_tree_host.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.h"
 
 #include <algorithm>
 #include <stack>
 #include <string>
 
@@ skipping 754 matching lines @@
     if (!page_scale_layer && root_scroll)
       page_scale_layer = root_scroll->parent();
 
     if (hud_layer_) {
       hud_layer_->PrepareForCalculateDrawProperties(
           device_viewport_size(), device_scale_factor_);
     }
 
     TRACE_EVENT0("cc", "LayerTreeHost::UpdateLayers::CalcDrawProps");
     bool can_render_to_separate_surface = true;
+    // TODO(vmpstr): Passing 0 as the current calculate properties number means
+    // that we won't be able to detect if a layer is part of |update_list|.
+    // Change this if this information is required.
     LayerTreeHostCommon::CalcDrawPropsMainInputs inputs(
         root_layer,
         device_viewport_size(),
         gfx::Transform(),
         device_scale_factor_,
         page_scale_factor_,
         page_scale_layer,
         GetRendererCapabilities().max_texture_size,
         settings_.can_use_lcd_text,
         can_render_to_separate_surface,
         settings_.layer_transforms_should_scale_layer_contents,
-        &update_list);
+        &update_list,
+        0);

[danakj, 2014/05/05 19:25:41]

can you put this in a temp var to give it a name?

[vmpstr, 2014/05/05 20:50:34]

Done.

     LayerTreeHostCommon::CalculateDrawProperties(&inputs);
 
     if (total_frames_used_for_lcd_text_metrics_ <=
         kTotalFramesToUseForLCDTextMetrics) {
       LayerTreeHostCommon::CallFunctionForSubtree(
           root_layer,
           base::Bind(&LayerTreeHost::CalculateLCDTextMetricsCallback,
                      base::Unretained(this)));
       total_frames_used_for_lcd_text_metrics_++;
     }
@@ skipping 435 matching lines @@
   swap_promise_list_.push_back(swap_promise.Pass());
 }
 
 void LayerTreeHost::BreakSwapPromises(SwapPromise::DidNotSwapReason reason) {
   for (size_t i = 0; i < swap_promise_list_.size(); i++)
     swap_promise_list_[i]->DidNotSwap(reason);
   swap_promise_list_.clear();
 }
 
 }  // namespace cc