cc: Unify use of DidSwapBuffers() and did_request_swap

cc/scheduler/draw_result.h

Index: cc/scheduler/draw_result.h
diff --git a/cc/scheduler/draw_swap_readback_result.h b/cc/scheduler/draw_result.h
similarity index 38%
rename from cc/scheduler/draw_swap_readback_result.h
rename to cc/scheduler/draw_result.h
index 852b89720a0d006bc4c0247887ae9d15a778eb13..e63303c48fd0c8279bbcdf5edec216743ee10c8b 100644
--- a/cc/scheduler/draw_swap_readback_result.h
+++ b/cc/scheduler/draw_result.h
@@ -2,13 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CC_SCHEDULER_DRAW_SWAP_READBACK_RESULT_H_
-#define CC_SCHEDULER_DRAW_SWAP_READBACK_RESULT_H_
+#ifndef CC_SCHEDULER_DRAW_RESULT_H_
+#define CC_SCHEDULER_DRAW_RESULT_H_
 
 namespace cc {
 
-struct DrawSwapReadbackResult {
-  enum DrawResult {
+enum DrawResult {
     INVALID_RESULT,
     DRAW_SUCCESS,
     DRAW_ABORTED_CHECKERBOARD_ANIMATIONS,
@@ -16,23 +15,8 @@ struct DrawSwapReadbackResult {
     DRAW_ABORTED_CANT_READBACK,
     DRAW_ABORTED_CONTEXT_LOST,
     DRAW_ABORTED_CANT_DRAW,
-  };
-
-  DrawSwapReadbackResult()
-      : draw_result(INVALID_RESULT),
-        did_request_swap(false),
-        did_readback(false) {}
-  DrawSwapReadbackResult(DrawResult draw_result,
-                         bool did_request_swap,
-                         bool did_readback)
-      : draw_result(draw_result),
-        did_request_swap(did_request_swap),
-        did_readback(did_readback) {}
-  DrawResult draw_result;
-  bool did_request_swap;
-  bool did_readback;
 };
 
 }  // namespace cc
 
-#endif  // CC_SCHEDULER_DRAW_SWAP_READBACK_RESULT_H_
+#endif  // CC_SCHEDULER_DRAW_RESULT_H_