Disable Blink assertions on Chromecast device builds

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 2845 matching lines @@
         ],
       }],  # fastbuild!=0
       ['dont_embed_build_metadata==1', {
         'defines': [
           'DONT_EMBED_BUILD_METADATA',
         ],
       }],  # dont_embed_build_metadata==1
       ['dcheck_always_on!=0', {
         'defines': ['DCHECK_ALWAYS_ON=1'],
       }],  # dcheck_always_on!=0
+      # Force disable blink assertions on Cast device builds (overrides DCHECK_ALWAYS_ON)
+      ['chromecast==1 and OS=="linux" and is_cast_desktop_build==0', {
+        'defines': ['ENABLE_ASSERT=0'],
+      }],
       ['tracing_like_official_build!=0', {
         'defines': ['TRACING_IS_OFFICIAL_BUILD=1'],
       }],  # tracing_like_official_build!=0
       ['fieldtrial_testing_like_official_build==0 and branding!="Chrome"', {
         'defines': ['FIELDTRIAL_TESTING_ENABLED'],
       }],  # fieldtrial_testing_like_official_build==0 and branding!="Chrome"
       ['OS=="win"', {
         'defines': ['NO_TCMALLOC'],
         'conditions': [
           ['win_use_allocator_shim==1', {
@@ skipping 3549 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',
   },
 }