More DCHECK() updates. A mixture of _EQ and _GE.

base/win/scoped_comptr.h

 // Copyright (c) 2006-2008 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 BASE_WIN_SCOPED_COMPTR_H_
 #define BASE_WIN_SCOPED_COMPTR_H_
 #pragma once
 
 #include <unknwn.h>
 
@@ skipping 51 matching lines @@
   // Sets the internal pointer to NULL and returns the held object without
   // releasing the reference.
   Interface* Detach() {
     Interface* p = ptr_;
     ptr_ = NULL;
     return p;
   }
 
   // Accepts an interface pointer that has already been addref-ed.
   void Attach(Interface* p) {
-    DCHECK(ptr_ == NULL);
+    DCHECK(!ptr_);
     ptr_ = p;
   }
 
   // Retrieves the pointer address.
   // Used to receive object pointers as out arguments (and take ownership).
   // The function DCHECKs on the current value being NULL.
   // Usage: Foo(p.Receive());
   Interface** Receive() {
-    DCHECK(ptr_ == NULL) << "Object leak. Pointer must be NULL";
+    DCHECK(!ptr_) << "Object leak. Pointer must be NULL";
     return &ptr_;
   }
 
   // A convenience for whenever a void pointer is needed as an out argument.
   void** ReceiveVoid() {
     return reinterpret_cast<void**>(Receive());
   }
 
   template <class Query>
   HRESULT QueryInterface(Query** p) {
@@ skipping 15 matching lines @@
   // Queries |other| for the interface this object wraps and returns the
   // error code from the other->QueryInterface operation.
   HRESULT QueryFrom(IUnknown* object) {
     DCHECK(object != NULL);
     return object->QueryInterface(Receive());
   }
 
   // Convenience wrapper around CoCreateInstance
   HRESULT CreateInstance(const CLSID& clsid, IUnknown* outer = NULL,
                          DWORD context = CLSCTX_ALL) {
-    DCHECK(ptr_ == NULL);
+    DCHECK(!ptr_);
     HRESULT hr = ::CoCreateInstance(clsid, outer, context, *interface_id,
                                     reinterpret_cast<void**>(&ptr_));
     return hr;
   }
 
   // Checks if the identity of |other| and this object is the same.
   bool IsSameObject(IUnknown* other) {
     if (!other && !ptr_)
       return true;
 
@@ skipping 32 matching lines @@
 
   static const IID& iid() {
     return *interface_id;
   }
 };
 
 }  // namespace win
 }  // namespace base
 
 #endif  // BASE_WIN_SCOPED_COMPTR_H_