Cache gfx::RenderText instances in views::Label.

ui/gfx/render_text.cc

Index: ui/gfx/render_text.cc
diff --git a/ui/gfx/render_text.cc b/ui/gfx/render_text.cc
index 9ef575018ff9934f077759c35d2edf43e8759211..725accd01e61fada55d8e479d79272a106c5e89b 100644
--- a/ui/gfx/render_text.cc
+++ b/ui/gfx/render_text.cc
@@ -402,6 +402,7 @@ void ApplyRenderParams(const FontRenderParams& params,
 RenderText::~RenderText() {
 }
 
+// static
 RenderText* RenderText::CreateInstance() {
 #if defined(OS_MACOSX)
   static const bool use_native =
@@ -413,10 +414,18 @@ RenderText* RenderText::CreateInstance() {
   return new RenderTextHarfBuzz;
 }
 
+// static
 RenderText* RenderText::CreateInstanceForEditing() {
   return new RenderTextHarfBuzz;
 }
 
+// static
+bool RenderText::MultilineSupported() {
+  // TODO(mukai): turn on for HarfBuzz when https://crrev.com/882643005/ is

[msw, 2015/02/05 20:16:41]

Shouldn't this be non-static for RTHB=>true and RTMac=>false?

[Jun Mukai, 2015/02/12 21:43:04]

Done.

+  // ready.
+  return false;
+}
+
 void RenderText::SetText(const base::string16& text) {
   DCHECK(!composition_range_.IsValid());
   if (text_ == text)