cc: Remove unused draw result.

Change-Id: Ie84d4af16c6d9a0a59e321f300fa1228c55b8799
Reviewed-on: https://chromium-review.googlesource.com/576430
Commit-Queue: Sohan Jyoti Ghosh <sohan.jyoti@huawei.com>
Reviewed-by: Brian Anderson <brianderson@chromium.org>
Cr-Commit-Position: refs/heads/master@{#488656}

cc/scheduler/draw_result.h

@@ -12,7 +12,6 @@ enum DrawResult {
   DRAW_SUCCESS,
   DRAW_ABORTED_CHECKERBOARD_ANIMATIONS,
   DRAW_ABORTED_MISSING_HIGH_RES_CONTENT,
-  DRAW_ABORTED_CONTEXT_LOST,
   DRAW_ABORTED_CANT_DRAW,
   DRAW_ABORTED_DRAINING_PIPELINE,
 };

cc/scheduler/scheduler_state_machine.cc

@@ -760,7 +760,6 @@ void SchedulerStateMachine::DidDrawInternal(DrawResult draw_result) {
   switch (draw_result) {
     case INVALID_RESULT:
     case DRAW_ABORTED_CANT_DRAW:
-    case DRAW_ABORTED_CONTEXT_LOST:
       NOTREACHED() << "Invalid return DrawResult:" << draw_result;
       break;
     case DRAW_ABORTED_DRAINING_PIPELINE: