Rewrite std::string("") to std::string(), Linux edition.

chrome/browser/policy/policy_map_unittest.cc

Index: chrome/browser/policy/policy_map_unittest.cc
diff --git a/chrome/browser/policy/policy_map_unittest.cc b/chrome/browser/policy/policy_map_unittest.cc
index a2f6207713a4e367ba7d94e0f33332b91ff0cd43..367ce068a860c99b40298a80d24edeae6da53f46 100644
--- a/chrome/browser/policy/policy_map_unittest.cc
+++ b/chrome/browser/policy/policy_map_unittest.cc
@@ -103,9 +103,13 @@ TEST(PolicyMapTest, MergeFrom) {
         Value::CreateBooleanValue(false));
   b.Set(key::kBookmarkBarEnabled, POLICY_LEVEL_RECOMMENDED,
         POLICY_SCOPE_MACHINE, Value::CreateBooleanValue(true));
-  b.Set(key::kDefaultSearchProviderSearchURL, POLICY_LEVEL_MANDATORY,
-        POLICY_SCOPE_MACHINE, Value::CreateStringValue(""));
-  b.Set(key::kDisableSpdy, POLICY_LEVEL_RECOMMENDED, POLICY_SCOPE_USER,
+  b.Set(key::kDefaultSearchProviderSearchURL,
+        POLICY_LEVEL_MANDATORY,
+        POLICY_SCOPE_MACHINE,
+        Value::CreateStringValue(std::string()));
+  b.Set(key::kDisableSpdy,
+        POLICY_LEVEL_RECOMMENDED,
+        POLICY_SCOPE_USER,
         Value::CreateBooleanValue(true));
 
   a.MergeFrom(b);
@@ -121,8 +125,10 @@ TEST(PolicyMapTest, MergeFrom) {
   c.Set(key::kBookmarkBarEnabled, POLICY_LEVEL_RECOMMENDED,
         POLICY_SCOPE_MACHINE, Value::CreateBooleanValue(true));
   // POLICY_LEVEL_MANDATORY over POLICY_LEVEL_RECOMMENDED.
-  c.Set(key::kDefaultSearchProviderSearchURL, POLICY_LEVEL_MANDATORY,
-        POLICY_SCOPE_MACHINE, Value::CreateStringValue(""));
+  c.Set(key::kDefaultSearchProviderSearchURL,
+        POLICY_LEVEL_MANDATORY,
+        POLICY_SCOPE_MACHINE,
+        Value::CreateStringValue(std::string()));
   // Merge new ones.
   c.Set(key::kDisableSpdy, POLICY_LEVEL_RECOMMENDED, POLICY_SCOPE_USER,
         Value::CreateBooleanValue(true));