Use C++11 range-based loop for core/css

Source/core/css/FontLoader.cpp

Index: Source/core/css/FontLoader.cpp
diff --git a/Source/core/css/FontLoader.cpp b/Source/core/css/FontLoader.cpp
index b52c7e6d8aa51cb24b7059053e17061ca5cf04f7..79fc64af05c4b5aa6d4a670514c16dfde2fb69f2 100644
--- a/Source/core/css/FontLoader.cpp
+++ b/Source/core/css/FontLoader.cpp
@@ -55,8 +55,8 @@ void FontLoader::loadPendingFonts()
 
     FontsToLoadVector fontsToBeginLoading;
     fontsToBeginLoading.swap(m_fontsToBeginLoading);
-    for (FontsToLoadVector::iterator it = fontsToBeginLoading.begin(); it != fontsToBeginLoading.end(); ++it) {
-        FontResource* fontResource = it->first.get();
+    for (const auto& item : fontsToBeginLoading) {
+        FontResource* fontResource = item.first.get();
         fontResource->beginLoadIfNeeded(m_resourceFetcher);
     }
 
@@ -88,8 +88,8 @@ void FontLoader::clearResourceFetcherAndFontSelector()
 
 void FontLoader::clearPendingFonts()
 {
-    for (FontsToLoadVector::iterator it = m_fontsToBeginLoading.begin(); it != m_fontsToBeginLoading.end(); ++it)
-        it->first->didUnscheduleLoad();
+    for (const auto& item : m_fontsToBeginLoading)
+        item.first->didUnscheduleLoad();
     m_fontsToBeginLoading.clear();
 }