Support vtable_verify (new compiler option).

base/allocator/allocator.gyp

Index: base/allocator/allocator.gyp
diff --git a/base/allocator/allocator.gyp b/base/allocator/allocator.gyp
index e2c8ac0faeb383fd96b138b1f99b23c830ab21bb..ee4ee44f34e6dc58f50fb5aed88a0c6a9476cd9c 100644
--- a/base/allocator/allocator.gyp
+++ b/base/allocator/allocator.gyp
@@ -394,6 +394,16 @@
               '-Wl,-u_ZN15HeapLeakChecker12IgnoreObjectEPKv,-u_ZN15HeapLeakChecker14UnIgnoreObjectEPKv',
           ]},
         }],
+        [ 'use_vtable_verify==1', {
+           'cflags': [

[Mark Mentovai, 2012/08/13 20:07:12]

It is normal in GYP conditions like this to only have this indent bump in by 2
spaces relative to the preceding line, not 4 as you’ve written. This is handled
on the other end by putting the } and ] on the same line, as you did on line
406.

+            '-Wno-sign-compare',
+            '-Wno-unused-result',
+            '-fvtable-verify=preinit',
+           ],
+           'cflags!': [
+            '-fvtable-verify=std',
+            ],

[Mark Mentovai, 2012/08/13 20:07:12]

Fix weird indentation. This should line up with the 'cflags!' two lines above.

+        }],
         [ 'linux_use_debugallocation==1', {
           'sources!': [
             # debugallocation.cc #includes tcmalloc.cc,