Pass resourceless software mode in BeginFrameArgs

cc/trees/layer_tree_host_impl.h

Index: cc/trees/layer_tree_host_impl.h
diff --git a/cc/trees/layer_tree_host_impl.h b/cc/trees/layer_tree_host_impl.h
index 4528dc7b45ea29f695117cc2f0bfd38f6d3246aa..f6982a7be23e443aeebb2b6383c836e6c165eb58 100644
--- a/cc/trees/layer_tree_host_impl.h
+++ b/cc/trees/layer_tree_host_impl.h
@@ -216,9 +216,7 @@ class CC_EXPORT LayerTreeHostImpl
   // Resets all of the trees to an empty state.
   void ResetTreesForTesting();
 
-  bool device_viewport_valid_for_tile_management() const {
-    return device_viewport_valid_for_tile_management_;
-  }
+  DrawMode GetDrawMode() const;
 
   // Viewport size in draw space: this size is in physical pixels and is used
   // for draw properties, tilings, quads and render passes.
@@ -255,7 +253,7 @@ class CC_EXPORT LayerTreeHostImpl
       const gfx::Transform& transform,
       const gfx::Rect& viewport,
       const gfx::Rect& clip,
-      bool valid_for_tile_management) OVERRIDE;
+      bool resourceless_software_draw) OVERRIDE;
   virtual void DidLoseOutputSurface() OVERRIDE;
   virtual void DidSwapBuffers() OVERRIDE;
   virtual void DidSwapBuffersComplete() OVERRIDE;
@@ -668,7 +666,7 @@ class CC_EXPORT LayerTreeHostImpl
   gfx::Transform external_transform_;
   gfx::Rect external_viewport_;
   gfx::Rect external_clip_;
-  bool device_viewport_valid_for_tile_management_;
+  bool resourceless_software_draw_;
 
   gfx::Rect viewport_damage_rect_;