Cleanup: Remove unneeded base/file_util.h includes in base.

base/files/file_path_unittest.cc

Index: base/files/file_path_unittest.cc
===================================================================
--- base/files/file_path_unittest.cc	(revision 199852)
+++ base/files/file_path_unittest.cc	(working copy)
@@ -3,7 +3,6 @@
 // found in the LICENSE file.
 
 #include "base/basictypes.h"
-#include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/utf_string_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -1122,32 +1121,32 @@
 
 TEST_F(FilePathTest, ConstructWithNUL) {
   // Assert FPS() works.
-  ASSERT_TRUE(FPS("a\0b").length() == 3);
+  ASSERT_EQ(3U, FPS("a\0b").length());
 
   // Test constructor strips '\0'
   FilePath path(FPS("a\0b"));
-  EXPECT_TRUE(path.value().length() == 1);
-  EXPECT_EQ(path.value(), FPL("a"));
+  EXPECT_EQ(1U, path.value().length());
+  EXPECT_EQ(FPL("a"), path.value());
 }
 
 TEST_F(FilePathTest, AppendWithNUL) {
   // Assert FPS() works.
-  ASSERT_TRUE(FPS("b\0b").length() == 3);
+  ASSERT_EQ(3U, FPS("b\0b").length());
 
   // Test Append() strips '\0'
   FilePath path(FPL("a"));
   path = path.Append(FPS("b\0b"));
-  EXPECT_TRUE(path.value().length() == 3);
+  EXPECT_EQ(3U, path.value().length());
 #if defined(FILE_PATH_USES_WIN_SEPARATORS)
-  EXPECT_EQ(path.value(), FPL("a\\b"));
+  EXPECT_EQ(FPL("a\\b"), path.value());
 #else
-  EXPECT_EQ(path.value(), FPL("a/b"));
+  EXPECT_EQ(FPL("a/b"), path.value());
 #endif
 }
 
 TEST_F(FilePathTest, ReferencesParentWithNUL) {
   // Assert FPS() works.
-  ASSERT_TRUE(FPS("..\0").length() == 3);
+  ASSERT_EQ(3U, FPS("..\0").length());
 
   // Test ReferencesParent() doesn't break with "..\0"
   FilePath path(FPS("..\0"));