Revert of Android: Avoid linking with --gc-sections.

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 4916 matching lines @@
                   ['target_arch=="x64"', {
                     'cflags': [
                       '-target x86_64-linux-androideabi',
                     ],
                     'ldflags': [
                       '-target x86_64-linux-androideabi',
                     ],
                   }],
                 ],
               }],
+              ['asan==1', {
+                'cflags': [
+                  # Android build relies on -Wl,--gc-sections removing
+                  # unreachable code. ASan instrumentation for globals inhibits
+                  # this and results in a library with unresolvable relocations.
+                  # TODO(eugenis): find a way to reenable this.
+                  '-mllvm -asan-globals=0',
+                ],
+              }],
               ['target_arch == "arm" and order_profiling==0', {
                 'ldflags': [
                   # Enable identical code folding to reduce size.
                   '-Wl,--icf=<(gold_icf_level)',
                 ],
               }],
               ['target_arch=="ia32"', {
                 # The x86 toolchain currently has problems with stack-protector.
                 'cflags!': [
                   '-fstack-protector',
@@ skipping 1373 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',
   },
 }