gpu: Add a new extension CHROMIUM_deschedule.

gpu/command_buffer/common/constants.h

 // Copyright (c) 2012 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.
 
 #ifndef GPU_COMMAND_BUFFER_COMMON_CONSTANTS_H_
 #define GPU_COMMAND_BUFFER_COMMON_CONSTANTS_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 namespace gpu {
 
 typedef int32_t CommandBufferOffset;
 const CommandBufferOffset kInvalidCommandBufferOffset = -1;
 
 namespace error {
   enum Error {
     kNoError,
     kInvalidSize,
     kOutOfBounds,
     kUnknownCommand,
     kInvalidArguments,
     kLostContext,
     kGenericError,
     kDeferCommandUntilLater,
-    kErrorLast = kDeferCommandUntilLater,
+    kDeferLaterCommands,
+    kErrorLast = kDeferLaterCommands,
   };
 
   // Return true if the given error code is an actual error.
   inline bool IsError(Error error) {
-    return error != kNoError && error != kDeferCommandUntilLater;
+    return error != kNoError && error != kDeferCommandUntilLater &&
+           error != kDeferLaterCommands;
   }
 
   // Provides finer grained information about why the context was lost.
   enum ContextLostReason {
     // This context definitely provoked the loss of context.
     kGuilty,
 
     // This context definitely did not provoke the loss of context.
     kInnocent,
 
@@ skipping 35 matching lines @@
   IN_PROCESS,
   MOJO,
   MOJO_LOCAL,
 
   NUM_COMMAND_BUFFER_NAMESPACES
 };
 
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_COMMON_CONSTANTS_H_