Change other usages of .size() to .empty() when applicable.

chrome/browser/gpu_process_host_ui_shim.cc

 // TODO(jam): move this file to src/content once we have an interface that the
 // embedder provides.  We can then use it to get the resource and resize the
 // window.
 // 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.
 
 #include "chrome/browser/gpu_process_host_ui_shim.h"
 
 #include "base/id_map.h"
@@ skipping 398 matching lines @@
 
   // The GPU process should have launched at this point and this object should
   // have been notified of its process handle.
   DCHECK(gpu_process_);
 
   linked_ptr<EstablishChannelCallback> callback = channel_requests_.front();
   channel_requests_.pop();
 
   // Currently if any of the GPU features are blacklisted, we don't establish a
   // GPU channel.
-  if (channel_handle.name.size() != 0 &&
+  if (!channel_handle.name.empty() &&
       gpu_data_manager_->GetGpuFeatureFlags().flags() != 0) {
     Send(new GpuMsg_CloseChannel(channel_handle));
     EstablishChannelError(callback.release(),
                           IPC::ChannelHandle(),
                           NULL,
                           gpu_info);
     AddCustomLogMessage(logging::LOG_WARNING, "WARNING", "GPU is blacklisted.");
     return;
   }
 
   callback->Run(channel_handle, gpu_process_, gpu_info);
 }
 
 void GpuProcessHostUIShim::OnSynchronizeReply() {
   // Guard against race conditions in abrupt GPU process termination.
-  if (synchronize_requests_.size() > 0) {
+  if (!synchronize_requests_.empty()) {
     linked_ptr<SynchronizeCallback> callback(synchronize_requests_.front());
     synchronize_requests_.pop();
     callback->Run();
   }
 }
 
 void GpuProcessHostUIShim::OnCommandBufferCreated(const int32 route_id) {
-  if (create_command_buffer_requests_.size() > 0) {
+  if (!create_command_buffer_requests_.empty()) {
     linked_ptr<CreateCommandBufferCallback> callback =
         create_command_buffer_requests_.front();
     create_command_buffer_requests_.pop();
     if (route_id == MSG_ROUTING_NONE)
       CreateCommandBufferError(callback.release(), route_id);
     else
       callback->Run(route_id);
   }
 }
 
@@ skipping 87 matching lines @@
   RenderViewHost* host = RenderViewHost::FromID(renderer_id,
                                                 render_view_id);
   if (!host) {
     return;
   }
   host->ScheduleComposite();
 }
 
 #endif