Sync: Display non-severe errors on about:sync in gray color rather than red.

sync/api/sync_error_unittest.cc

 // Copyright (c) 2012 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 "sync/api/sync_error.h"
 
 #include <string>
 
 #include "base/location.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 11 matching lines @@
   EXPECT_FALSE(error.IsSet());
 }
 
 TEST_F(SyncErrorTest, Default) {
   tracked_objects::Location location = FROM_HERE;
   std::string msg = "test";
   ModelType type = PREFERENCES;
   SyncError error(location, SyncError::DATATYPE_ERROR, msg, type);
   ASSERT_TRUE(error.IsSet());
   EXPECT_EQ(location.line_number(), error.location().line_number());
-  EXPECT_EQ("datatype error was encountered: " + msg, error.message());
+  EXPECT_EQ("datatype error was encountered: ", error.GetMessagePrefix());
+  EXPECT_EQ(msg, error.message());
   EXPECT_EQ(type, error.model_type());
+  EXPECT_EQ(SyncError::SYNC_ERROR_SEVERITY_ERROR, error.GetSeverity());
+}
+
+TEST_F(SyncErrorTest, LowSeverity) {
+  tracked_objects::Location location = FROM_HERE;
+  std::string msg = "test";
+  ModelType type = PREFERENCES;
+  SyncError error(location, SyncError::DATATYPE_POLICY_ERROR, msg, type);
+  ASSERT_TRUE(error.IsSet());
+  EXPECT_EQ(location.line_number(), error.location().line_number());
+  EXPECT_EQ("disabled due to configuration constraints: ",
+      error.GetMessagePrefix());
+  EXPECT_EQ(msg, error.message());
+  EXPECT_EQ(type, error.model_type());
+  EXPECT_EQ(SyncError::SYNC_ERROR_SEVERITY_INFO, error.GetSeverity());
 }
 
 TEST_F(SyncErrorTest, Reset) {
   tracked_objects::Location location = FROM_HERE;
   std::string msg = "test";
   ModelType type = PREFERENCES;
 
   SyncError error;
   EXPECT_FALSE(error.IsSet());
 
@@ skipping 84 matching lines @@
   EXPECT_EQ(std::string(), error2.ToString());
 
   error2 = error;
   EXPECT_TRUE(error2.IsSet());
   EXPECT_NE(string::npos, error.ToString().find(expected));
 }
 
 }  // namespace
 
 }  // namespace syncer