Roll Chrome into Mojo.

cc/scheduler/scheduler_state_machine.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/scheduler/scheduler_state_machine.h"
 
 #include "base/debug/trace_event.h"
 #include "base/debug/trace_event_argument.h"
 #include "base/format_macros.h"
 #include "base/logging.h"
@@ skipping 857 matching lines @@
 
   // If we've lost the output surface, end the current BeginImplFrame ASAP
   // so we can start creating the next output surface.
   if (output_surface_state_ == OUTPUT_SURFACE_LOST)
     return true;
 
   // SwapAck throttle the deadline since we wont draw and swap anyway.
   if (pending_swaps_ >= max_pending_swaps_)
     return false;
 
+  if (active_tree_needs_first_draw_)
+    return true;
+
+  if (!needs_redraw_)
+    return false;
+
   // This is used to prioritize impl-thread draws when the main thread isn't
   // producing anything, e.g., after an aborted commit. We also check that we
   // don't have a pending tree -- otherwise we should give it a chance to
   // activate.
   // TODO(skyostil): Revisit this when we have more accurate deadline estimates.
   if (commit_state_ == COMMIT_STATE_IDLE && !has_pending_tree_)
     return true;
 
-  if (!needs_redraw_)
-    return false;
-
-  if (active_tree_needs_first_draw_)
-    return true;
-
   // Prioritize impl-thread draws in impl_latency_takes_priority_ mode.
   if (impl_latency_takes_priority_)
     return true;
 
   // If we are on battery power and want to prioritize impl latency because
   // we don't trust deadline tasks to execute at the right time.
   if (impl_latency_takes_priority_on_battery_)
     return true;
 
   return false;
@@ skipping 219 matching lines @@
       static_cast<int>(begin_impl_frame_state_),
       static_cast<int>(commit_state_),
       has_pending_tree_ ? 'T' : 'F',
       pending_tree_is_ready_for_activation_ ? 'T' : 'F',
       active_tree_needs_first_draw_ ? 'T' : 'F',
       max_pending_swaps_,
       pending_swaps_);
 }
 
 }  // namespace cc