<v8> Use remove_v8base_debug_symbols

When this gyp variable is enabled the debug symbols of v8_base library
are not generated. This reduces the debug section size of the
libQtWebEngineCore library significantly (~25% less).

Change-Id: Iad71af0ada4cd3924d66e47294c51dc2b554dbf7
Reviewed-by: Andras Becsi <[email protected]>

Author: stampho

chromium/v8/tools/gyp/v8.gyp

@@ -30,6 +30,7 @@
     'icu_use_data_file_flag%': 0,
     'v8_code': 1,
     'v8_random_seed%': 314159265,
+    'remove_v8base_debug_symbols%': 0,
   },
   'includes': ['../../build/toolchain.gypi', '../../build/features.gypi'],
   'targets': [
@@ -859,6 +860,9 @@
         '../../src/third_party/fdlibm/fdlibm.h',
       ],
       'conditions': [
+        ['OS!="win" and remove_v8base_debug_symbols==1', {
+          'cflags!': ['-g', '-gdwarf-4'],
+        }],
         ['want_separate_host_toolset==1', {
           'toolsets': ['host', 'target'],
         }, {