Fix a few lints found while working on crrev.com/1051503003.

gpu/command_buffer/service/in_process_command_buffer.cc

 // Copyright 2013 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 "gpu/command_buffer/service/in_process_command_buffer.h"
 
 #include <queue>
 #include <set>
 #include <utility>
 
@@ skipping 106 matching lines @@
 struct GpuInProcessThreadHolder {
   GpuInProcessThreadHolder() : gpu_thread(new GpuInProcessThread) {}
   scoped_refptr<InProcessCommandBuffer::Service> gpu_thread;
 };
 
 base::LazyInstance<GpuInProcessThreadHolder> g_default_service =
     LAZY_INSTANCE_INITIALIZER;
 
 class ScopedEvent {
  public:
-  ScopedEvent(base::WaitableEvent* event) : event_(event) {}
+  explicit ScopedEvent(base::WaitableEvent* event) : event_(event) {}
   ~ScopedEvent() { event_->Signal(); }
 
  private:
   base::WaitableEvent* event_;
 };
 
 // This wrapper adds the WaitSyncPoint which allows waiting on a sync point
 // on the service thread, implemented using a condition variable.
 class SyncPointManagerWrapper {
  public:
@@ skipping 823 matching lines @@
 
 #if defined(OS_ANDROID)
 scoped_refptr<gfx::SurfaceTexture>
 InProcessCommandBuffer::GetSurfaceTexture(uint32 stream_id) {
   DCHECK(stream_texture_manager_);
   return stream_texture_manager_->GetSurfaceTexture(stream_id);
 }
 #endif
 
 }  // namespace gpu