[mojo] Fix some lint errors

mojo/edk/system/core.h

 // 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.
 
 #ifndef MOJO_EDK_SYSTEM_CORE_H_
 #define MOJO_EDK_SYSTEM_CORE_H_
 
 #include <memory>
+#include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/shared_memory_handle.h"
 #include "base/synchronization/lock.h"
 #include "base/task_runner.h"
 #include "mojo/edk/embedder/scoped_platform_handle.h"
 #include "mojo/edk/system/dispatcher.h"
@@ skipping 13 matching lines @@
 class PortProvider;
 }
 
 namespace mojo {
 namespace edk {
 
 // |Core| is an object that implements the Mojo system calls. All public methods
 // are thread-safe.
 class MOJO_SYSTEM_IMPL_EXPORT Core {
  public:
-  explicit Core();
+  Core();
   virtual ~Core();
 
   // Called exactly once, shortly after construction, and before any other
   // methods are called on this object.
   void SetIOTaskRunner(scoped_refptr<base::TaskRunner> io_task_runner);
 
   // Retrieves the NodeController for the current process.
   NodeController* GetNodeController();
 
   scoped_refptr<Dispatcher> GetDispatcher(MojoHandle handle);
@@ skipping 218 matching lines @@
       size_t* size,
       MojoPlatformSharedBufferHandleFlags* flags);
 
   void GetActiveHandlesForTest(std::vector<MojoHandle>* handles);
 
  private:
   MojoResult WaitManyInternal(const MojoHandle* handles,
                               const MojoHandleSignals* signals,
                               uint32_t num_handles,
                               MojoDeadline deadline,
-                              uint32_t *result_index,
+                              uint32_t* result_index,
                               HandleSignalsState* signals_states);
 
   // Used to pass ownership of our NodeController over to the IO thread in the
   // event that we're torn down before said thread.
   static void PassNodeControllerToIOThread(
       std::unique_ptr<NodeController> node_controller);
 
   // Guards node_controller_.
   //
   // TODO(rockot): Consider removing this. It's only needed because we
@@ skipping 22 matching lines @@
   // Properties that can be read using the MojoGetProperty() API.
   bool property_sync_call_allowed_ = true;
 
   DISALLOW_COPY_AND_ASSIGN(Core);
 };
 
 }  // namespace edk
 }  // namespace mojo
 
 #endif  // MOJO_EDK_SYSTEM_CORE_H_