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

build/config/sanitizers/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/chromecast_build.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 
 # Contains the dependencies needed for sanitizers to link into executables and
 # shared_libraries. Unconditionally depend upon this target as it is empty if
@@ skipping 134 matching lines @@
     if (is_win) {
       cflags += [ "-fsanitize-blacklist=" +
                   rebase_path("//tools/memory/asan/blacklist_win.txt",
                               root_build_dir) ]
     } else {
       # TODO(rnk): Remove this as discussed in http://crbug.com/427202.
       cflags +=
           [ "-fsanitize-blacklist=" +
             rebase_path("//tools/memory/asan/blacklist.txt", root_build_dir) ]
     }
-    if (is_mac) {
+    if (is_android) {
+      # 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.
+      cflags += [
+        "-mllvm",
+        "-asan-globals=0",
+      ]
+    } else if (is_mac) {
       # http://crbug.com/352073
       cflags += [
         "-mllvm",
         "-asan-globals=0",
       ]
       libs = [ "clang_rt.asan_osx_dynamic" ]
 
       # TODO(GYP): deal with mac_bundles.
     } else if (is_win) {
       assert(target_cpu == "x86", "WinASan is 32-bit only currently")
@@ skipping 131 matching lines @@
     if (target_cpu == "arm") {
       # http://crbug.com/517105
       cflags += [
         "-mllvm",
         "-sanitizer-coverage-block-threshold=0",
       ]
     }
     defines = [ "SANITIZER_COVERAGE" ]
   }
 }