Merge ARM sysroot install script with existing x86/amd64 one.

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 885 matching lines @@
           'enable_settings_app%': 1,
         }, {
           'enable_settings_app%': 0,
         }],
 
         ['OS=="linux" and target_arch=="arm" and chromeos==0', {
           # Set some defaults for arm/linux chrome builds
           'use_allocator%': 'none',
           # sysroot needs to be an absolute path otherwise it generates
           # incorrect results when passed to pkg-config
-          'sysroot%': '<!(cd <(DEPTH) && pwd -P)/arm-sysroot',
+          'sysroot%': '<!(cd <(DEPTH) && pwd -P)/chrome/installer/linux/debian_wheezy_arm-sysroot',
         }], # OS=="linux" and target_arch=="arm" and chromeos==0
 
         ['OS=="linux" and branding=="Chrome" and buildtype=="Official" and chromeos==0', {
           'conditions': [
             ['target_arch=="x64"', {
               'sysroot%': '<!(cd <(DEPTH) && pwd -P)/chrome/installer/linux/debian_wheezy_amd64-sysroot',
             }],
             ['target_arch=="ia32"', {
               'sysroot%': '<!(cd <(DEPTH) && pwd -P)/chrome/installer/linux/debian_wheezy_i386-sysroot',
             }],
@@ skipping 4831 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',
   },
 }