Linux: fix a bunch of NULL vs. 0 issues spotted by gcc 4.5.

app/gtk_dnd_util_unittest.cc

 // Copyright (c) 2010 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 <string>
 
 #include "app/gtk_dnd_util.h"
 #include "base/pickle.h"
 #include "base/scoped_ptr.h"
 #include "base/utf_string_conversions.h"
@@ skipping 28 matching lines @@
   pickle.WriteString(kBadUrl);
 
   GtkSelectionData data;
   scoped_array<guchar> test_data(new guchar[pickle.size()]);
   memcpy(test_data.get(), pickle.data(), pickle.size());
   data.data = test_data.get();
   data.length = pickle.size();
 
   GURL url;
   string16 title;
-  EXPECT_EQ(false, gtk_dnd_util::ExtractNamedURL(&data, &url, &title));
+  EXPECT_FALSE(gtk_dnd_util::ExtractNamedURL(&data, &url, &title));
 }
 
 TEST(GtkDndUtilTest, ExtractNamedURLInvalidInput) {
   GURL url;
   string16 title;
   GtkSelectionData data;
   data.data = NULL;
   data.length = 0;
 
-  EXPECT_EQ(false, gtk_dnd_util::ExtractNamedURL(&data, &url, &title));
+  EXPECT_FALSE(gtk_dnd_util::ExtractNamedURL(&data, &url, &title));
 
   guchar empty_data[] = "";
   data.data = empty_data;
   data.length = 0;
 
-  EXPECT_EQ(false, gtk_dnd_util::ExtractNamedURL(&data, &url, &title));
+  EXPECT_FALSE(gtk_dnd_util::ExtractNamedURL(&data, &url, &title));
 
   const std::string kTitle = "title";
   Pickle pickle;
   pickle.WriteString(kTitle);
 
   scoped_array<guchar> test_data(new guchar[pickle.size()]);
   memcpy(test_data.get(), pickle.data(), pickle.size());
   data.data = test_data.get();
   data.length = pickle.size();
 
-  EXPECT_EQ(false, gtk_dnd_util::ExtractNamedURL(&data, &url, &title));
+  EXPECT_FALSE(gtk_dnd_util::ExtractNamedURL(&data, &url, &title));
 }