build: On Android, disable LTO for specific targets only when targeting GCC.

build/android/disable_gcc_lto.gypi

Index: build/android/disable_gcc_lto.gypi
diff --git a/build/android/disable_lto.gypi b/build/android/disable_gcc_lto.gypi
similarity index 72%
copy from build/android/disable_lto.gypi
copy to build/android/disable_gcc_lto.gypi
index e379cfd3199ae1f6fe0a6fd6e7d1782b7e205954..a733c7aa0fc87251eba6fcbd566c95de8c8bed54 100644
--- a/build/android/disable_lto.gypi
+++ b/build/android/disable_gcc_lto.gypi
@@ -2,13 +2,13 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-# This file is meant to be included to disable LTO on a target.
+# This file is meant to be included to disable GCC LTO on a target.
 
 {
   'target_conditions': [
     ['_toolset=="target"', {
       'conditions': [
-        ['OS=="android" and (use_lto==1 or use_lto_o2==1)', {
+        ['OS=="android" and clang==0 and (use_lto==1 or use_lto_o2==1)', {
           'cflags!': [
             '-flto',
             '-ffat-lto-objects',