Enable /PROFILE for Release builds and remove it from Debug builds.

chrome/chrome_dll.gypi

 # 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.
 {
   'target_defaults': {
     'variables': {
       'chrome_dll_target': 0,
     },
     'target_conditions': [
       ['chrome_dll_target==1', {
@@ skipping 134 matching lines @@
               ],
               'msvs_settings': {
                 'VCLinkerTool': {
                   'ImportLibrary': '$(OutDir)\\lib\\chrome_dll.lib',
                   # On Windows we use build chrome_dll as an intermediate target
                   # then have a subsequent step which either optimizes it to its
                   # final location, or copies it to its final location, based
                   # on whether or not optimize_with_syzygy==1.
                   'ProgramDatabaseFile': '$(OutDir)\\initial\\chrome_dll.pdb',
                   'OutputFile': '$(OutDir)\\initial\\chrome.dll',
-                  'conditions': [
-                    ['fastbuild==0', {
-                      # This corresponds to the /PROFILE flag which ensures the PDB
-                      # file contains FIXUP information. This information is used
-                      # by the Syzygy optimization tool. Syzygy optimization is
-                      # disabled when fastbuild!=0.
-                      'Profile': 'true',
-                    }],
-                  ],
                 },
               },
             }],  # OS=="win"
             ['OS=="mac"', {
               # The main browser executable's name is <(mac_product_name).
               # Certain things will get confused if two modules in the
               # executable share the same name, so append " Framework" to the
               # product_name used for the framework.  This will result in
               # a name like "Chromium Framework.framework".
               'product_name': '<(mac_product_name) Framework',
@@ skipping 561 matching lines @@
                   'LinkIncremental': '<(msvs_debug_link_nonincremental)',
                 },
               },
             },
           },
         },  # target chrome_dll
       ],
     }],
   ],
 }