cc: Add more DrawSwapReadbackResult enums

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/format_macros.h"
 #include "base/logging.h"
 #include "base/strings/stringprintf.h"
@@ skipping 1050 matching lines @@
         forced_redraw_state_ = FORCED_REDRAW_STATE_WAITING_FOR_COMMIT;
       }
       break;
     case DrawSwapReadbackResult::DRAW_ABORTED_MISSING_HIGH_RES_CONTENT:
       // It's not clear whether this missing content is because of missing
       // pictures (which requires a commit) or because of memory pressure
       // removing textures (which might not).  To be safe, request a commit
       // anyway.
       needs_commit_ = true;
       break;
+    case DrawSwapReadbackResult::DRAW_ABORTED_CONTEXT_LOST:
+    case DrawSwapReadbackResult::DRAW_ABORTED_CANT_DRAW:
+    case DrawSwapReadbackResult::DRAW_ABORTED_CANT_READBACK:
+      // Nothing to do.

[danakj, 2014/02/13 20:43:55]

Should these needs_redraw_ = true; ? That's what would have happened before you
added these enums right?

[brianderson, 2014/02/14 01:41:50]

I think it would be best to combine these states with the INVALID state use
NOTREACHED for all of them.

+      break;
   }
 }
 
 void SchedulerStateMachine::SetNeedsCommit() { needs_commit_ = true; }
 
 void SchedulerStateMachine::SetNeedsForcedCommitForReadback() {
   // If this is called in READBACK_STATE_IDLE, this is a "first" readback
   // request.
   // If this is called in READBACK_STATE_WAITING_FOR_REPLACEMENT_COMMIT, this
   // is a back-to-back readback request that started before the replacement
@@ skipping 70 matching lines @@
     case OUTPUT_SURFACE_ACTIVE:
     case OUTPUT_SURFACE_WAITING_FOR_FIRST_COMMIT:
     case OUTPUT_SURFACE_WAITING_FOR_FIRST_ACTIVATION:
       return true;
   }
   NOTREACHED();
   return false;
 }
 
 }  // namespace cc