components: Change auto to not deduce raw pointers.

components/update_client/utils_unittest.cc

Index: components/update_client/utils_unittest.cc
diff --git a/components/update_client/utils_unittest.cc b/components/update_client/utils_unittest.cc
index 5865419e67aeb16c636f37ce06bd7f6e23ff8c9c..4609b7f656f61b7234347736695e585f859631fb 100644
--- a/components/update_client/utils_unittest.cc
+++ b/components/update_client/utils_unittest.cc
@@ -94,14 +94,14 @@ TEST(UpdateClientUtils, IsValidInstallerAttributeName) {
 
   const char* const valid_names[] = {"A", "Z", "a", "a-b", "A_B",
                                      "z", "0", "9", "-_"};
-  for (const auto& name : valid_names)
+  for (const char* name : valid_names)
     EXPECT_TRUE(IsValidInstallerAttribute(
         make_pair(std::string(name), std::string("value"))));
 
   const char* const invalid_names[] = {
       "",   "a=1", " name", "name ", "na me", "<name", "name>",
       "\"", "\\",  "\xaa",  ".",     ",",     ";",     "+"};
-  for (const auto& name : invalid_names)
+  for (const char* name : invalid_names)
     EXPECT_FALSE(IsValidInstallerAttribute(
         make_pair(std::string(name), std::string("value"))));
 }
@@ -119,13 +119,13 @@ TEST(UpdateClientUtils, IsValidInstallerAttributeValue) {
 
   const char* const valid_values[] = {"",  "a=1", "A", "Z",      "a",
                                       "z", "0",   "9", "-.,;+_="};
-  for (const auto& value : valid_values)
+  for (const char* value : valid_values)
     EXPECT_TRUE(IsValidInstallerAttribute(
         make_pair(std::string("name"), std::string(value))));
 
   const char* const invalid_values[] = {" ap", "ap ", "a p", "<ap",
                                         "ap>", "\"",  "\\",  "\xaa"};
-  for (const auto& value : invalid_values)
+  for (const char* value : invalid_values)
     EXPECT_FALSE(IsValidInstallerAttribute(
         make_pair(std::string("name"), std::string(value))));
 }