add -fPIC to ldflags if linux_fpic is enabled

build/common.gypi

 # Copyright (c) 2011 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 1850 matching lines @@
                     ],
                   }],
                 ],
               }],
             ],
           }],
           ['linux_fpic==1', {
             'cflags': [
               '-fPIC',
             ],
+            'ldflags': [
+              '-fPIC',
+            ],
           }],
           # TODO(rkc): Currently building Chrome with the PIE flag causes
           # remote debugging to break (remote debugger does not get correct
           # section header offsets hence causing all symbol handling to go
           # kaboom). See crosbug.com/15266
           # Remove this flag once this issue is fixed.
           ['linux_disable_pie==1', {
             'target_conditions': [
               ['_type=="executable"', {
                 'ldflags': [
@@ skipping 783 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',
   },
 }