Added CommandBuffer::GetLastError.

This is equivalent to GetLastState().error. It saves copying 6 ints. This is temporary until skia does not invoke MakeCurrent for every GL call.

BUG==112187

Review URL: http://codereview.chromium.org/9314020

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@120022 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 16 insertions, 2 deletions

diff --git a/gpu/command_buffer/common/cmd_buffer_common.cc b/gpu/command_buffer/common/cmd_buffer_common.cc
index 0bfc9e1..235cc5d 100644
--- a/gpu/command_buffer/common/cmd_buffer_common.cc
+++ b/gpu/command_buffer/common/cmd_buffer_common.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -31,6 +31,14 @@ const char* GetCommandName(CommandId command_id) {
 
 }  // namespace cmd
 
+// TODO(apatrick): this is a temporary optimization while skia is calling
+// RendererGLContext::MakeCurrent prior to every GL call. It saves returning 6
+// ints redundantly when only the error is needed for the CommandBufferProxy
+// implementation.
+error::Error CommandBuffer::GetLastError() {
+  return GetLastState().error;
+}
+
 }  // namespace gpu
 
 
diff --git a/gpu/command_buffer/common/command_buffer.h b/gpu/command_buffer/common/command_buffer.h
index ec4cc14..ee8fe06 100644
--- a/gpu/command_buffer/common/command_buffer.h
+++ b/gpu/command_buffer/common/command_buffer.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -134,6 +134,12 @@ class CommandBuffer {
   // call this first.
   virtual void SetContextLostReason(error::ContextLostReason) = 0;
 
+  // TODO(apatrick): this is a temporary optimization while skia is calling
+  // RendererGLContext::MakeCurrent prior to every GL call. It saves returning 6
+  // ints redundantly when only the error is needed for the CommandBufferProxy
+  // implementation.
+  virtual error::Error GetLastError();
+
  private:
   DISALLOW_COPY_AND_ASSIGN(CommandBuffer);
 };