GLES2CmdDecoder should resize GLSurface using GLSurface::Resize

ui/gl/gl_surface_osmesa.cc

Index: ui/gl/gl_surface_osmesa.cc
diff --git a/ui/gl/gl_surface_osmesa.cc b/ui/gl/gl_surface_osmesa.cc
index 00acc95b29c0760d4fcead57edf8fe6e6f5802ed..f488274696f67e3669136194febf757a020b887e 100644
--- a/ui/gl/gl_surface_osmesa.cc
+++ b/ui/gl/gl_surface_osmesa.cc
@@ -30,14 +30,14 @@ GLSurfaceOSMesa::GLSurfaceOSMesa(OSMesaSurfaceFormat format,
 }
 
 bool GLSurfaceOSMesa::Initialize() {
-  return Resize(size_);
+  return Resize(size_, 1.f);
 }
 
 void GLSurfaceOSMesa::Destroy() {
   buffer_.reset();
 }
 
-bool GLSurfaceOSMesa::Resize(const gfx::Size& new_size) {
+bool GLSurfaceOSMesa::Resize(const gfx::Size& new_size, float scale_factor) {
   scoped_ptr<ui::ScopedMakeCurrent> scoped_make_current;
   GLContext* current_context = GLContext::GetCurrent();
   bool was_current =