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

content/renderer/cpp_bound_class_unittest.cc

Index: content/renderer/cpp_bound_class_unittest.cc
diff --git a/content/renderer/cpp_bound_class_unittest.cc b/content/renderer/cpp_bound_class_unittest.cc
index 8b05fea12bff5bc8ef02763117ccf4672db312b2..9504c6551c6eaf69df7ed7aa2ba7084544c4bf05 100644
--- a/content/renderer/cpp_bound_class_unittest.cc
+++ b/content/renderer/cpp_bound_class_unittest.cc
@@ -105,7 +105,7 @@ class CppBoundClassTest : public RenderViewTest {
   void CheckTrue(const std::string& expression) {
     int was_page_a = -1;
     base::string16 check_page_a =
-        ASCIIToUTF16(std::string("Number(") + expression + ")");
+        base::ASCIIToUTF16(std::string("Number(") + expression + ")");
     EXPECT_TRUE(ExecuteJavaScriptAndReturnIntValue(check_page_a, &was_page_a));
     EXPECT_EQ(1, was_page_a);
   }