[Chromecast] Replace architecure-based conditionals with flag.

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 215 matching lines @@
             'toolkit_views%': 0,
           }],
 
           # Embedded builds use aura without ash or views.
           ['embedded==1', {
             'use_aura%': 1,
             'use_ash%': 0,
             'toolkit_views%': 0,
           }],
 
+          # Chromecast builds on x86 Linux should default to desktop builds.
+          ['chromecast==1 and OS=="linux" and (target_arch=="ia32" or target_arch=="x64")', {
+            'is_cast_desktop_build%': 1,
+          }, {
+            'is_cast_desktop_build%': 0,
+          }],
+
           # Enable HiDPI on Mac OS, Windows and Linux (including Chrome OS).
           ['OS=="mac" or OS=="win" or OS=="linux"', {
             'enable_hidpi%': 1,
           }],
 
           # Enable Top Chrome Material Design on Chrome OS, Windows, and Linux.
           ['chromeos==1 or OS=="win" or OS=="linux"', {
             'enable_topchrome_md%': 1,
           }],
 
@@ skipping 69 matching lines @@
             ],
           }, {
             'sysroot%': ''
           }], # OS=="linux" and use_sysroot==1
         ],
       },
 
       # Copy conditionally-set variables out one scope.
       'chromeos%': '<(chromeos)',
       'chromecast%': '<(chromecast)',
+      'is_cast_desktop_build%': '<(is_cast_desktop_build)',
       'host_arch%': '<(host_arch)',
       'target_arch%': '<(target_arch)',
       'target_subarch%': '<(target_subarch)',
       'mips_arch_variant%': '<(mips_arch_variant)',
       'mips_dsp_rev%': '<(mips_dsp_rev)',
       'toolkit_views%': '<(toolkit_views)',
       'desktop_linux%': '<(desktop_linux)',
       'use_aura%': '<(use_aura)',
       'use_ash%': '<(use_ash)',
       'use_cras%': '<(use_cras)',
@@ skipping 795 matching lines @@
     'use_ozone_evdev%': '<(use_ozone_evdev)',
     'use_xkbcommon%': '<(use_xkbcommon)',
     'use_gtk3%': '<(use_gtk3)',
     'use_clipboard_aurax11%': '<(use_clipboard_aurax11)',
     'desktop_linux%': '<(desktop_linux)',
     'use_x11%': '<(use_x11)',
     'use_gnome_keyring%': '<(use_gnome_keyring)',
     'linux_fpic%': '<(linux_fpic)',
     'chromeos%': '<(chromeos)',
     'chromecast%': '<(chromecast)',
+    'is_cast_desktop_build%': '<(is_cast_desktop_build)',
     'enable_viewport%': '<(enable_viewport)',
     'enable_hidpi%': '<(enable_hidpi)',
     'enable_topchrome_md%': '<(enable_topchrome_md)',
     'enable_wayland_server%': '<(enable_wayland_server)',
     'image_loader_extension%': '<(image_loader_extension)',
     'fastbuild%': '<(fastbuild)',
     'dont_embed_build_metadata%': '<(dont_embed_build_metadata)',
     'win_z7%': '<(win_z7)',
     'dcheck_always_on%': '<(dcheck_always_on)',
     'tracing_like_official_build%': '<(tracing_like_official_build)',
@@ skipping 1235 matching lines @@
             'conditions': [
               ['disable_display==0', {
                 # Enable the Cast ozone platform on all A/V Cast builds.
                 'ozone_platform_cast%': 1,
 
                 # For desktop Chromecast builds, override the default "headless"
                 # platform with --ozone-platform=egltest
                 # TODO(slan|halliwell): Make the default platform "cast" on
                 # desktop too.
                 'conditions': [
-                  ['OS=="linux" and target_arch!="arm"', {
+                  ['is_cast_desktop_build==1', {
                     'ozone_platform_egltest%': 1,
                     'ozone_platform_ozonex%': 1,
                   }, {
                     # On device builds, enable "cast" as the default platform.
                     'ozone_platform%': 'cast',
                   }],
                 ],
               }],
             ],
           }, {  # chromecast!=1
@@ skipping 4003 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',
   },
 }