Make latency tests measure until the end of swap buffers.

content/common/gpu/gpu_command_buffer_stub.cc

  // 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.
 
 #if defined(ENABLE_GPU)
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 163 matching lines @@
 bool GpuCommandBufferStub::HasUnprocessedCommands() {
   if (command_buffer_.get()) {
     gpu::CommandBuffer::State state = command_buffer_->GetLastState();
     return state.put_offset != state.get_offset &&
         !gpu::error::IsError(state.error);
   }
   return false;
 }
 
 void GpuCommandBufferStub::OnEcho(const IPC::Message& message) {
+  // For latency_tests.cc:
+  UNSHIPPED_TRACE_EVENT_INSTANT0("test_gpu", "CompositorSwapBuffersComplete");
   TRACE_EVENT0("gpu", "GpuCommandBufferStub::OnEcho");
   Send(new IPC::Message(message));
 }
 
 void GpuCommandBufferStub::DelayEcho(IPC::Message* message) {
   delayed_echos_.push_back(message);
 }
 
 void GpuCommandBufferStub::OnReschedule() {
   while (!delayed_echos_.empty()) {
@@ skipping 462 matching lines @@
 }
 
 void GpuCommandBufferStub::SetMemoryAllocation(
     const GpuMemoryAllocation& allocation) {
   allocation_ = allocation;
 
   SendMemoryAllocationToProxy(allocation);
 }
 
 #endif  // defined(ENABLE_GPU)