ozone: Add ozone_auto_platforms setting

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 543 matching lines @@
       'enable_mdns%' : 0,
       'enable_service_discovery%': 0,
       'enable_hangout_services_extension%': 0,
 
        # Enable the Syzygy optimization step.
       'syzygy_optimize%': 0,
 
       # Enable hole punching for the protected video.
       'video_hole%': 0,
 
+      # Automatically select platforms under ozone. Turn this off to
+      # build only explicitly selected platforms.
+      'ozone_auto_platforms%': 1,
+
       'conditions': [
         # A flag for POSIX platforms
         ['OS=="win"', {
           'os_posix%': 0,
         }, {
           'os_posix%': 1,
         }],
 
         # A flag for BSD platforms
         ['OS=="freebsd" or OS=="openbsd"', {
@@ skipping 800 matching lines @@
 
     # Force disable libstdc++ debug mode.
     'disable_glibcxx_debug%': 0,
 
     # Set to 1 to compile with MSE support for MPEG2 TS
     'enable_mpeg2ts_stream_parser%': 0,
 
     # Support ChromeOS touchpad gestures with ozone.
     'use_evdev_gestures%': 0,
 
+    # Default ozone platform (if no --ozone-platform flag).
+    'ozone_platform%': "",
+
+    # Ozone platforms to include in the build.
+    'ozone_platform_caca%': 0,
+    'ozone_platform_dri%': 0,
+    'ozone_platform_egltest%': 0,
+    'ozone_platform_ozonex%': 0,
+    'ozone_platform_test%': 0,
+
     'conditions': [
       # Enable the Syzygy optimization step for the official builds.
       ['OS=="win" and buildtype=="Official" and syzyasan!=1', {
         'syzygy_optimize%': 1,
       }, {
         'syzygy_optimize%': 0,
       }],
       # Get binutils version so we can enable debug fission if we can.
       ['os_posix==1 and OS!="mac" and OS!="ios"', {
         'conditions': [
@@ skipping 708 matching lines @@
         'arm_fpu%': '',
         'arm_float_abi%': '',
         'arm_thumb%': 0,
       }],
 
       # Enable brlapi by default for chromeos.
       [ 'chromeos==1', {
         'use_brlapi%': 1,
       }],
 
-      ['use_ozone==1', {
-        # This is the default platform
-        'ozone_platform%': "test",
+      ['use_ozone==1 and ozone_auto_platforms==1', {
+        # Use test as the default platform.
+        'ozone_platform%': 'test',
 
-        # Enable built-in ozone platforms if ozone is enabled.
-        'ozone_platform_caca%': 0,
+        # Build all platforms whose deps are in install-build-deps.sh.
+        # Only these platforms will be compile tested by buildbots.
         'ozone_platform_dri%': 1,
+        'ozone_platform_test%': 1,
         'ozone_platform_egltest%': 1,
-        'ozone_platform_ozonex%': 0,
-        'ozone_platform_test%': 1,
-      }, {  # use_ozone==0
-        'ozone_platform_caca%': 0,
-        'ozone_platform_dri%': 0,
-        'ozone_platform_egltest%': 0,
-        'ozone_platform_ozonex%': 0,
-        'ozone_platform_test%': 0,
+      }],
+
+      ['use_ozone==1 and ozone_auto_platforms==1 and chromeos==1', {
+        # Use dri as the default platform.
+        'ozone_platform%': 'dri',
       }],
 
       ['desktop_linux==1 and use_aura==1 and use_x11==1', {
         'use_clipboard_aurax11%': 1,
       }],
 
       ['OS=="win" and use_goma==1', {
         # goma doesn't support pch yet.
         'chromium_win_pch': 0,
         # goma doesn't support PDB yet, so win_z7=1 or fastbuild=1.
@@ skipping 3151 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',
   },
 }