Remove GLImage::Destroy().

ui/gl/gl_image_surface_texture.cc

Index: ui/gl/gl_image_surface_texture.cc
diff --git a/ui/gl/gl_image_surface_texture.cc b/ui/gl/gl_image_surface_texture.cc
index 3c8b43e14dbe3d1fe031f03cb9ed2094cfd4e88d..40e30a8948b9113df71bd93e00eb41de7ffcf63a 100644
--- a/ui/gl/gl_image_surface_texture.cc
+++ b/ui/gl/gl_image_surface_texture.cc
@@ -14,8 +14,6 @@ GLImageSurfaceTexture::GLImageSurfaceTexture(const gfx::Size& size)
 
 GLImageSurfaceTexture::~GLImageSurfaceTexture() {
   DCHECK(thread_checker_.CalledOnValidThread());
-  DCHECK(!surface_texture_.get());
-  DCHECK_EQ(0, texture_id_);
 }
 
 bool GLImageSurfaceTexture::Initialize(SurfaceTexture* surface_texture) {
@@ -25,12 +23,6 @@ bool GLImageSurfaceTexture::Initialize(SurfaceTexture* surface_texture) {
   return true;
 }
 
-void GLImageSurfaceTexture::Destroy(bool have_context) {
-  DCHECK(thread_checker_.CalledOnValidThread());
-  surface_texture_ = NULL;
-  texture_id_ = 0;
-}
-
 gfx::Size GLImageSurfaceTexture::GetSize() {
   return size_;
 }