Revert 93066 - Execute all GL commands up to the put offset reported by a each flush.This means g...

gpu/command_buffer/client/gles2_implementation.cc

 // Copyright (c) 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.
 
 // A class to emulate GLES2 over command buffers.
 
 #include "../client/gles2_implementation.h"
 #include <GLES2/gles2_command_buffer.h>
 #include "../client/mapped_memory.h"
 #include "../common/gles2_cmd_utils.h"
@@ skipping 814 matching lines @@
   GPU_CLIENT_LOG("[" << this << "] glSwapBuffers()");
   // TODO(piman): Strictly speaking we'd want to insert the token after the
   // swap, but the state update with the updated token might not have happened
   // by the time the SwapBuffer callback gets called, forcing us to synchronize
   // with the GPU process more than needed. So instead, make it happen before.
   // All it means is that we could be slightly looser on the kMaxSwapBuffers
   // semantics if the client doesn't use the callback mechanism, and by chance
   // the scheduler yields between the InsertToken and the SwapBuffers.
   swap_buffers_tokens_.push(helper_->InsertToken());
   helper_->SwapBuffers();
+  helper_->YieldScheduler();
   helper_->CommandBufferHelper::Flush();
   // Wait if we added too many swap buffers.
   if (swap_buffers_tokens_.size() > kMaxSwapBuffers) {
     helper_->WaitForToken(swap_buffers_tokens_.front());
     swap_buffers_tokens_.pop();
   }
 }
 
 void GLES2Implementation::CopyTextureToParentTextureCHROMIUM(
     GLuint client_child_id, GLuint client_parent_id) {
@@ skipping 1437 matching lines @@
   if (static_cast<size_t>(bufsize) < result.size()) {
     SetGLError(GL_INVALID_OPERATION,
                "glProgramInfoCHROMIUM: bufsize is too small for result.");
     return;
   }
   memcpy(info, &result[0], result.size());
 }
 
 }  // namespace gles2
 }  // namespace gpu