Remove GLImage::Destroy().

ui/gl/gl_image_glx.cc

Index: ui/gl/gl_image_glx.cc
diff --git a/ui/gl/gl_image_glx.cc b/ui/gl/gl_image_glx.cc
index 3b678637b342b583077836a3a3b5609112db0f97..ba093d5f2ca49456e8a379f1f6d7206f1acefa2e 100644
--- a/ui/gl/gl_image_glx.cc
+++ b/ui/gl/gl_image_glx.cc
@@ -104,7 +104,8 @@ GLImageGLX::GLImageGLX(const gfx::Size& size, unsigned internalformat)
     : glx_pixmap_(0), size_(size), internalformat_(internalformat) {}
 
 GLImageGLX::~GLImageGLX() {
-  DCHECK_EQ(0u, glx_pixmap_);
+  if (glx_pixmap_)
+    glXDestroyGLXPixmap(gfx::GetXDisplay(), glx_pixmap_);
 }
 
 bool GLImageGLX::Initialize(XID pixmap) {
@@ -152,13 +153,6 @@ bool GLImageGLX::Initialize(XID pixmap) {
   return true;
 }
 
-void GLImageGLX::Destroy(bool have_context) {
-  if (glx_pixmap_) {
-    glXDestroyGLXPixmap(gfx::GetXDisplay(), glx_pixmap_);
-    glx_pixmap_ = 0;
-  }
-}
-
 gfx::Size GLImageGLX::GetSize() {
   return size_;
 }