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

ui/gfx/gl/gl_bindings_skia_in_process.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.
 
 
 #include "ui/gfx/gl/gl_bindings_skia_in_process.h"
 
 #include "base/logging.h"
 #include "ui/gfx/gl/gl_bindings.h"
 #include "ui/gfx/gl/gl_implementation.h"
@@ skipping 438 matching lines @@
         break;
       case gfx::kGLImplementationOSMesaGL:
         binding = kDesktop_GrGLBinding;
         break;
       case gfx::kGLImplementationEGLGLES2:
         binding = kES2_GrGLBinding;
         break;
       case gfx::kGLImplementationMockGL:
         NOTREACHED();
         return;
+      default:
+        NOTREACHED();
+        return;
     }
 
     static GrGLInterface host_gl_interface = {
       binding,
 
       kProbe_GrGLCapability,   // NPOTRenderTargetSupport
       kProbe_GrGLCapability,   // MinRenderTargetHeight
       kProbe_GrGLCapability,   // MinRenderTargetWidth
 
       StubGLActiveTexture,
@@ skipping 105 matching lines @@
       NULL,  // glBindFragDataLocationIndexed
       GrGLInterface::kStaticInitEndGuard,
     };
     GrGLSetGLInterface(&host_gl_interface);
     host_StubGL_installed = true;
   }
 }
 
 }  // namespace gfx