Add chromium_code: 1 to surface.gyp and gl.gyp to pick up -Werror.

ui/gfx/gl/gl_context_glx.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 extern "C" {
 #include <X11/Xlib.h>
 }
 
 #include "ui/gfx/gl/gl_context_glx.h"
 
@@ skipping 15 matching lines @@
  public:
   void operator()(void* x) const {
     ::XFree(x);
   }
 };
 
 bool IsCompositingWindowManagerActive(Display* display) {
   // The X macro "None" has been undefined by gl_bindings.h.
   const int kNone = 0;
   static Atom net_wm_cm_s0 = kNone;
-  if (net_wm_cm_s0 == kNone) {
+  if (net_wm_cm_s0 == static_cast<Atom>(kNone)) {
     net_wm_cm_s0 = XInternAtom(display, "_NET_WM_CM_S0", True);
   }
-  if (net_wm_cm_s0 == kNone) {
+  if (net_wm_cm_s0 == static_cast<Atom>(kNone)) {
     return false;
   }
-  return XGetSelectionOwner(display, net_wm_cm_s0) != kNone;
+  return XGetSelectionOwner(display, net_wm_cm_s0) != static_cast<Atom>(kNone);
 }
 
 }  // namespace anonymous
 
 GLContextGLX::GLContextGLX(GLShareGroup* share_group)
   : GLContext(share_group),
     context_(NULL) {
 }
 
 GLContextGLX::~GLContextGLX() {
@@ skipping 64 matching lines @@
                       static_cast<GLXContext>(context_));
     context_ = NULL;
   }
 }
 
 bool GLContextGLX::MakeCurrent(GLSurface* surface) {
   DCHECK(context_);
   if (IsCurrent(surface))
     return true;
 
-  GLSurfaceGLX* surface_glx = static_cast<GLSurfaceGLX*>(surface);
-
   if (!glXMakeCurrent(
       GLSurfaceGLX::GetDisplay(),
       reinterpret_cast<GLXDrawable>(surface->GetHandle()),
       static_cast<GLXContext>(context_))) {
     LOG(ERROR) << "Couldn't make context current with X drawable.";
     Destroy();
     return false;
   }
 
   return true;
@@ skipping 55 matching lines @@
       GLSurfaceGLX::GetDisplay(),
       0);
   if (extensions) {
     return GLContext::GetExtensions() + " " + extensions;
   }
 
   return GLContext::GetExtensions();
 }
 
 }  // namespace gfx