Make ASAN options apply to target binaries only

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 2190 matching lines @@
               '-Xclang', '-add-plugin', '-Xclang', '<(clang_add_plugin)',
             ],
           }],
           ['clang==1 and "<(GENERATOR)"=="ninja"', {
             'cflags': [
               # See http://crbug.com/110262
               '-fcolor-diagnostics',
             ],
           }],
           ['asan==1', {
-            'cflags': [
-              '-faddress-sanitizer',
-              '-fno-omit-frame-pointer',
-              '-w',
-            ],
-            'ldflags': [
-              '-faddress-sanitizer',
-            ],
-            'defines': [
-              'ADDRESS_SANITIZER',
+            'target_conditions': [
+              ['_toolset=="target"', {
+                  'cflags': [
+                      '-faddress-sanitizer',
+                      '-fno-omit-frame-pointer',
+                      '-w',
+                  ],
+                  'ldflags': [
+                      '-faddress-sanitizer',
+                  ],
+                  'defines': [
+                      'ADDRESS_SANITIZER',
+                  ],
+              }],
             ],
           }],
           ['order_profiling!=0 and (chromeos==1 or OS=="linux")', {
             'target_conditions' : [
               ['_toolset=="target"', {
                 'cflags': [
                   '-finstrument-functions',
                 ],
               }],
             ],
@@ skipping 859 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',
   },
 }