Move more string_util functions to base namespace.

components/gcm_driver/instance_id/instance_id_driver_unittest.cc

 // Copyright 2015 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 "components/gcm_driver/instance_id/instance_id_driver.h"
 
 #include <cmath>
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
@@ skipping 14 matching lines @@
 const char kScope2[] = "FooBar";
 
 bool VerifyInstanceID(const std::string& str) {
   // Checks the length.
   if (str.length() != static_cast<size_t>(
           std::ceil(InstanceID::kInstanceIDByteLength * 8 / 6.0)))
     return false;
 
   // Checks if it is URL-safe base64 encoded.
   for (auto ch : str) {
-    if (!IsAsciiAlpha(ch) && !IsAsciiDigit(ch) && ch != '_' && ch != '-')
+    if (!base::IsAsciiAlpha(ch) && !base::IsAsciiDigit(ch) &&
+        ch != '_' && ch != '-')
       return false;
   }
   return true;
 }
 
 }  // namespace
 
 class InstanceIDDriverTest : public testing::Test {
  public:
   InstanceIDDriverTest();
@@ skipping 300 matching lines @@
       GetToken(instance_id, kAuthorizedEntity1, kScope2, options);
   EXPECT_FALSE(new_token1.empty());
   EXPECT_NE(token1, new_token1);
 
   // The other token is not affected by the deletion.
   EXPECT_EQ(token2,
             GetToken(instance_id, kAuthorizedEntity2, kScope1, options));
 }
 
 }  // instance_id