Suppress two extremely /analyze noisy warnings.

build/common.gypi

 # Copyright (c) 2012 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.
 
 # IMPORTANT:
 # Please don't directly include this file if you are building via gyp_chromium,
 # since gyp_chromium is automatically forcing its inclusion.
 {
   # Variables expected to be overriden on the GYP command line (-D) or by
   # ~/.gyp/include.gypi.
@@ skipping 2833 matching lines @@
                   '/wd6326',  # Potential comparison of constant with constant
                   '/wd28159', # Consider using 'GetTickCount64'
                   '/wd28204', # Inconsistent SAL annotations
                   '/wd28251', # Inconsistent SAL annotations
                   '/wd28252', # Inconsistent SAL annotations
                   '/wd28253', # Inconsistent SAL annotations
                   '/wd28196', # The precondition is not satisfied
                   '/wd28301', # Inconsistent SAL annotations
                   '/wd6340',  # Sign mismatch in function parameter
                   '/wd28182', # Dereferencing NULL pointer
+                  # C6285 is ~16% of raw warnings and has low value
+                  '/wd6285',  # non-zero constant || non-zero constant
+                  # C6334 is ~80% of raw warnings and has low value
+                  '/wd6334',  # sizeof applied to an expression with an operator
                 ],
               },
             },
           }],  # win_analyze
         ],
       }],  # OS==win
       ['chromecast==1', {
         'defines': [
           'LOG_DISABLED=0',
         ],
@@ skipping 2993 matching lines @@
     # settings in target dicts.  SYMROOT is a special case, because many other
     # Xcode variables depend on it, including variables such as
     # PROJECT_DERIVED_FILE_DIR.  When a source group corresponding to something
     # like PROJECT_DERIVED_FILE_DIR is added to a project, in order for the
     # files to appear (when present) in the UI as actual files and not red
     # red "missing file" proxies, the correct path to PROJECT_DERIVED_FILE_DIR,
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }