Do not link non-executables with -pie for tsan=1

(-pie is incompatible with -shared and -static)

Review URL: https://chromiumcodereview.appspot.com/10690103

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@148393 0039d316-1c4b-4281-b951-d872f2087c98

build/common.gypi

@@ -2347,12 +2347,18 @@
                 ],
                 'ldflags': [
                   '-fthread-sanitizer',
-                      '-pie',
                 ],
                 'defines': [
                   'THREAD_SANITIZER',
                   'DYNAMIC_ANNOTATIONS_EXTERNAL_IMPL=1',
                 ],
+                'target_conditions': [
+                  ['_type=="executable"', {
+                    'ldflags': [
+                      '-pie',
+                    ],
+                  }],
+                ],
               }],
             ],
           }],