Coverity: Fix missing const on WebPluginDelegatePepper::Device3DCreateContext override arg.

chrome/renderer/webplugin_delegate_pepper.cc

 // Copyright (c) 2010 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.
 
 #define PEPPER_APIS_ENABLED 1
 
 #include "chrome/renderer/webplugin_delegate_pepper.h"
 
 #include <string>
 #include <vector>
@@ skipping 905 matching lines @@
           return NPERR_GENERIC_ERROR;
       }
     }
   }
 
   return NPERR_NO_ERROR;
 }
 
 NPError WebPluginDelegatePepper::Device3DCreateContext(
     int32 config,
-    int32* attrib_list,
+    const int32* attrib_list,
     NPDeviceContext3D** context) {
   if (!context)
     return NPERR_GENERIC_ERROR;
 
   // Only one config available currently.
   if (config != 0)
     return NPERR_GENERIC_ERROR;
 
   // For now, just use the old API to initialize the context.
   NPDeviceContext3DConfig old_config;
   old_config.commandBufferSize = kDefaultCommandBufferSize;
   if (attrib_list) {
-    for (int32* attrib_pair = attrib_list; *attrib_pair; attrib_pair += 2) {
+    for (const int32* attrib_pair = attrib_list; *attrib_pair;
+         attrib_pair += 2) {
       switch (attrib_pair[0]) {
         case NP3DAttrib_CommandBufferSize:
           old_config.commandBufferSize = attrib_pair[1];
           break;
         default:
           return NPERR_GENERIC_ERROR;
       }
     }
   }
 
@@ skipping 798 matching lines @@
   CGRect bounds;
   bounds.origin.x = dest_rect.x();
   bounds.origin.y = canvas_height - dest_rect.y() - dest_rect.height();
   bounds.size.width = dest_rect.width();
   bounds.size.height = dest_rect.height();
 
   CGContextDrawImage(canvas, bounds, image);
   CGContextRestoreGState(canvas);
 }
 #endif  // defined(OS_MACOSX)
-