Fixed host_gcc_version for Android.

build/common.gypi

Index: build/common.gypi
diff --git a/build/common.gypi b/build/common.gypi
index 52a91e30392da630a489f467da72539eb8f1407c..93d9aff278739b16668d22a79bea962dd51f18d7 100644
--- a/build/common.gypi
+++ b/build/common.gypi
@@ -1385,20 +1385,18 @@
       # TODO(glider): set clang to 1 earlier for ASan and TSan builds so that
       # it takes effect here.
       ['os_posix==1 and OS!="mac" and OS!="ios" and clang==0 and asan==0 and lsan==0 and tsan==0 and msan==0', {
+        'host_gcc_version%': '<!pymod_do_main(compiler_version host compiler)',
         'conditions': [
           ['OS=="android"', {
             # We directly set the gcc versions since we know what we use.
             'conditions': [
               ['target_arch=="x64" or target_arch=="arm64"', {
-                'host_gcc_version%': 48,
                 'gcc_version%': 48,
               }, {
-                'host_gcc_version%': 46,
                 'gcc_version%': 46,
               }],
             ],
           }, {
-            'host_gcc_version%': '<!pymod_do_main(compiler_version host compiler)',
             'gcc_version%': '<!pymod_do_main(compiler_version target compiler)',
           }],
         ],