Update uses of UTF conversions in chrome/common to use the base:: namespace.

chrome/common/net/url_fixer_upper_unittest.cc

Index: chrome/common/net/url_fixer_upper_unittest.cc
diff --git a/chrome/common/net/url_fixer_upper_unittest.cc b/chrome/common/net/url_fixer_upper_unittest.cc
index ea80c73077f01102262d7f312a63dcd4a60e1d36..46d41c6e651383355fcaaeac14194e3022fbaf86 100644
--- a/chrome/common/net/url_fixer_upper_unittest.cc
+++ b/chrome/common/net/url_fixer_upper_unittest.cc
@@ -379,7 +379,7 @@ TEST(URLFixerUpperTest, FixupFile) {
 
   // c:\foo\bar.txt -> file:///c:/foo/bar.txt (basic)
 #if defined(OS_WIN)
-  GURL fixedup(URLFixerUpper::FixupURL(WideToUTF8(original.value()),
+  GURL fixedup(URLFixerUpper::FixupURL(base::WideToUTF8(original.value()),
                                        std::string()));
 #elif defined(OS_POSIX)
   GURL fixedup(URLFixerUpper::FixupURL(original.value(), std::string()));
@@ -389,7 +389,7 @@ TEST(URLFixerUpperTest, FixupFile) {
   // TODO(port): Make some equivalent tests for posix.
 #if defined(OS_WIN)
   // c|/foo\bar.txt -> file:///c:/foo/bar.txt (pipe allowed instead of colon)
-  std::string cur(WideToUTF8(original.value()));
+  std::string cur(base::WideToUTF8(original.value()));
   EXPECT_EQ(':', cur[1]);
   cur[1] = '|';
   EXPECT_EQ(golden, URLFixerUpper::FixupURL(cur, std::string()));