Revert 259371 "clang roll 198389:202554 reloaded"

trunk/src/build/config/compiler/BUILD.gn

 # Copyright (c) 2013 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/android/config.gni")
 if (cpu_arch == "arm") {
   import("//build/config/arm.gni")
 }
 
 # compiler ---------------------------------------------------------------------
@@ skipping 220 matching lines @@
       ldflags += [
         # Enable identical code folding to reduce size.
         "-Wl,--icf=safe",
       ]
     }
 
     if (is_clang) {
       if (cpu_arch == "arm") {
         cflags += [
           "-target arm-linux-androideabi",
+          "-mllvm -arm-enable-ehabi",
         ]
         ldflags += [ "-target arm-linux-androideabi" ]
       } else if (cpu_arch == "x86") {
         cflags += [ "-target x86-linux-androideabi" ]
         ldflags += [ "-target x86-linux-androideabi" ]
       }
     }
   }
 }
 
@@ skipping 421 matching lines @@
     cflags = [ "-g1" ]
   }
 }
 
 config("no_symbols") {
   if (!is_win) {
     cflags = [ "-g0" ]
   }
 }