Don't use crtbegin/crtend in android_webview builds.

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 3527 matching lines @@
                     ],
                     'ldflags': [
                       '-pie',
                     ],
                   }],
                 ],
               }],
               ['_type=="shared_library" or _type=="loadable_module"', {
                 'ldflags': [
                   '-Wl,-shared,-Bsymbolic',
-                  # crtbegin_so.o should be the last item in ldflags.
-                  '<(android_ndk_lib)/crtbegin_so.o',
                 ],
-                'libraries': [
-                  # crtend_so.o needs to be the last item in libraries.
-                  # Do not add any libraries after this!
-                  '<(android_ndk_lib)/crtend_so.o',
+                'conditions': [
+                  ['android_webview_build==0', {
+                    'ldflags': [
+                      # crtbegin_so.o should be the last item in ldflags.
+                      '<(android_ndk_lib)/crtbegin_so.o',
+                    ],
+                    'libraries': [
+                      # crtend_so.o needs to be the last item in libraries.
+                      # Do not add any libraries after this!
+                      '<(android_ndk_lib)/crtend_so.o',
+                    ],
+                  }],
                 ],
               }],
             ],
           }],
           # Settings for building host targets using the system toolchain.
           ['_toolset=="host"', {
             'cflags!': [
               # Due to issues in Clang build system, using ASan on 32-bit
               # binaries on x86_64 host is problematic.
               # TODO(eugenis): re-enable.
@@ skipping 798 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',
   },
 }