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

chrome/browser/autocomplete/autocomplete_input_unittest.cc

Index: chrome/browser/autocomplete/autocomplete_input_unittest.cc
diff --git a/chrome/browser/autocomplete/autocomplete_input_unittest.cc b/chrome/browser/autocomplete/autocomplete_input_unittest.cc
index f3110a9116442beb9983ed791bd0658109a109b6..2720f30777f29b534b9ecdeb5090608b143152e5 100644
--- a/chrome/browser/autocomplete/autocomplete_input_unittest.cc
+++ b/chrome/browser/autocomplete/autocomplete_input_unittest.cc
@@ -11,6 +11,8 @@
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/url_parse.h"
 
+using base::ASCIIToUTF16;
+
 TEST(AutocompleteInputTest, InputType) {
   struct test_data {
     const base::string16 input;
@@ -106,7 +108,7 @@ TEST(AutocompleteInputTest, InputType) {
     { ASCIIToUTF16("127.0.1"), AutocompleteInput::UNKNOWN },
     { ASCIIToUTF16("127.0.1/"), AutocompleteInput::URL },
     { ASCIIToUTF16("browser.tabs.closeButtons"), AutocompleteInput::UNKNOWN },
-    { WideToUTF16(L"\u6d4b\u8bd5"), AutocompleteInput::UNKNOWN },
+    { base::WideToUTF16(L"\u6d4b\u8bd5"), AutocompleteInput::UNKNOWN },
     { ASCIIToUTF16("[2001:]"), AutocompleteInput::QUERY },
     { ASCIIToUTF16("[2001:dB8::1]"), AutocompleteInput::URL },
     { ASCIIToUTF16("192.168.0.256"), AutocompleteInput::QUERY },
@@ -163,7 +165,7 @@ TEST(AutocompleteInputTest, InputTypeWithDesiredTLD) {
 // This tests for a regression where certain input in the omnibox caused us to
 // crash. As long as the test completes without crashing, we're fine.
 TEST(AutocompleteInputTest, InputCrash) {
-  AutocompleteInput input(WideToUTF16(L"\uff65@s"), base::string16::npos,
+  AutocompleteInput input(base::WideToUTF16(L"\uff65@s"), base::string16::npos,
                           base::string16(), GURL(),
                           AutocompleteInput::INVALID_SPEC, true, false,
                           true, AutocompleteInput::ALL_MATCHES);
@@ -185,7 +187,7 @@ TEST(AutocompleteInputTest, ParseForEmphasizeComponent) {
     { ASCIIToUTF16("http://foo/bar baz"), Component(0, 4), Component(7, 3) },
     { ASCIIToUTF16("link:foo.com"), Component(0, 4), kInvalidComponent },
     { ASCIIToUTF16("www.foo.com:81"), kInvalidComponent, Component(0, 11) },
-    { WideToUTF16(L"\u6d4b\u8bd5"), kInvalidComponent, Component(0, 2) },
+    { base::WideToUTF16(L"\u6d4b\u8bd5"), kInvalidComponent, Component(0, 2) },
     { ASCIIToUTF16("view-source:http://www.foo.com/"), Component(12, 4),
         Component(19, 11) },
     { ASCIIToUTF16("view-source:https://example.com/"),