Update from https://crrev.com/312600

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 2040 matching lines @@
         'grit_defines': [
           '-t', 'android',
           '-E', 'ANDROID_JAVA_TAGGED_ONLY=true',
           '--no-output-all-resource-defines',
         ],
       }],
       ['OS=="mac" or OS=="ios"', {
         'grit_defines': ['-D', 'scale_factors=2x'],
       }],
       ['OS == "ios"', {
+        'variables': {
+          'enable_coverage%': 0,
+        },
         'grit_defines': [
           '-t', 'ios',
           # iOS uses a whitelist to filter resources.
           '-w', '<(DEPTH)/build/ios/grit_whitelist.txt',
           '--no-output-all-resource-defines',
         ],
 
         # Enable host builds when generating with ninja-ios.
         'conditions': [
           ['"<(GENERATOR)"=="ninja"', {
             'host_os%': "mac",
           }],
 
           # TODO(sdefresne): Remove the target_subarch check once Apple has
           # upstreamed the support for "arm64". http://crbug.com/341453
-          ['target_subarch!="arm32" or "<(GENERATOR)"=="xcode"', {
+          # TODO(eugenebut): Remove enable_coverage check once
+          # libclang_rt.profile_ios.a is bundled with Chromium's clang.
+          # http://crbug.com/450379
+          ['target_subarch!="arm32" or enable_coverage or "<(GENERATOR)"=="xcode"', {
             'clang_xcode%': 1,
           }],
         ],
       }],
       ['enable_extensions==1', {
         'grit_defines': ['-D', 'enable_extensions'],
       }],
       ['enable_plugins!=0', {
         'grit_defines': ['-D', 'enable_plugins'],
       }],
@@ skipping 1437 matching lines @@
     }],
     # TODO(jochen): Enable this on chromeos on arm. http://crbug.com/356580
     ['os_posix==1 and disable_fatal_linker_warnings==0 and use_evdev_gestures==0 and (chromeos==0 or target_arch!="arm")', {
       'target_defaults': {
         'ldflags': [
           '-Wl,--fatal-warnings',
         ],
       },
     }],
     # TODO(thakis): Enable this everywhere. http://crbug.com/371125
-    ['(OS=="linux" or OS=="android") and asan==0 and msan==0 and tsan==0 and use_ozone!=1', {
+    ['(OS=="linux" or OS=="android") and asan==0 and msan==0 and tsan==0 and ubsan==0 and ubsan_vptr==0 and use_ozone!=1', {
       'target_defaults': {
         'ldflags': [
           '-Wl,-z,defs',
         ],
       },
     }],
     ['os_posix==1 and chromeos==0', {
       # Chrome OS enables -fstack-protector-strong via its build wrapper,
       # and we want to avoid overriding this, so stack-protector is only
       # enabled when not building on Chrome OS.
@@ skipping 2306 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',
   },
 }