Skip base::string16 if not necessary for WebString <-> ASCII conversion

content/renderer/renderer_blink_platform_impl.cc

Index: content/renderer/renderer_blink_platform_impl.cc
diff --git a/content/renderer/renderer_blink_platform_impl.cc b/content/renderer/renderer_blink_platform_impl.cc
index 3ea9437961ce40fd8765b508fc131f8f5b4233d7..73d76e621ea5fb9721b5ca9d354ed135bdd5490a 100644
--- a/content/renderer/renderer_blink_platform_impl.cc
+++ b/content/renderer/renderer_blink_platform_impl.cc
@@ -436,7 +436,7 @@ void RendererBlinkPlatformImpl::cacheMetadataInCacheStorage(
 }
 
 WebString RendererBlinkPlatformImpl::defaultLocale() {
-  return base::ASCIIToUTF16(RenderThread::Get()->GetLocale());
+  return WebString::fromASCII(RenderThread::Get()->GetLocale());
 }
 
 void RendererBlinkPlatformImpl::suddenTerminationChanged(bool enabled) {
@@ -513,7 +513,7 @@ WebString RendererBlinkPlatformImpl::MimeRegistry::mimeTypeForExtension(
           mojo::String::From(base::string16(file_extension)), &mime_type)) {
     return WebString();
   }
-  return base::ASCIIToUTF16(mime_type.get());
+  return WebString::fromASCII(mime_type.get());
 }
 
 //------------------------------------------------------------------------------