Use StringBuilder::appendLiteral() / StringBuilder::append(char) when possible

Source/core/css/resolver/StyleResolverStats.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 42 matching lines @@
     matchedPropertyCacheAdded = 0;
 }
 
 String StyleResolverStats::report() const
 {
     StringBuilder output;
 
     unsigned sharedStylesRejected = sharedStyleRejectedByUncommonAttributeRules + sharedStyleRejectedBySiblingRules + sharedStyleRejectedByParent;
     unsigned sharedStylesUsed = sharedStyleFound - sharedStylesRejected;
 
-    output.append("Style sharing:\n");
+    output.appendLiteral("Style sharing:\n");
     output.append(String::format("  %u elements were added to the sharing candidate list.\n", sharedStyleCandidates));
     output.append(String::format("  %u calls were made to findSharedStyle, %u found a candidate to share with (%.2f%%).\n", sharedStyleLookups, sharedStyleFound, PERCENT(sharedStyleFound, sharedStyleLookups)));
     if (printMissedCandidateCount)
         output.append(String::format("  %u candidates could have matched but were not in the list when searching (%.2f%%).\n", sharedStyleMissed, PERCENT(sharedStyleMissed, sharedStyleLookups)));
     output.append(String::format("  %u of found styles were rejected (%.2f%%), %.2f%% by uncommon attribute rules, %.2f%% by sibling rules and %.2f%% by parents disabling sharing.\n",
         sharedStylesRejected,
         PERCENT(sharedStylesRejected, sharedStyleFound),
         PERCENT(sharedStyleRejectedByUncommonAttributeRules, sharedStylesRejected),
         PERCENT(sharedStyleRejectedBySiblingRules, sharedStylesRejected),
         PERCENT(sharedStyleRejectedByParent, sharedStylesRejected)));
     output.append(String::format("  %u of found styles were used for sharing (%.2f%%).\n", sharedStylesUsed, PERCENT(sharedStylesUsed, sharedStyleFound)));
     output.append(String::format("  %.2f%% of calls to findSharedStyle returned a shared style.\n", PERCENT(sharedStylesUsed, sharedStyleLookups)));
 
-    output.append("\n");
+    output.append('\n');
 
-    output.append("Matched property cache:\n");
+    output.appendLiteral("Matched property cache:\n");
     output.append(String::format("  %u calls to applyMatchedProperties, %u hit the cache (%.2f%%).\n", matchedPropertyApply, matchedPropertyCacheHit, PERCENT(matchedPropertyCacheHit, matchedPropertyApply)));
     output.append(String::format("  %u cache hits also shared the inherited style (%.2f%%).\n", matchedPropertyCacheInheritedHit, PERCENT(matchedPropertyCacheInheritedHit, matchedPropertyCacheHit)));
     output.append(String::format("  %u styles created in applyMatchedProperties were added to the cache (%.2f%%).\n", matchedPropertyCacheAdded, PERCENT(matchedPropertyCacheAdded, matchedPropertyApply)));
 
     return output.toString();
 }
 
 } // namespace blink