Makes GetBuildTime behave identically on all build types.

base/base_nacl.gyp

Index: base/base_nacl.gyp
diff --git a/base/base_nacl.gyp b/base/base_nacl.gyp
index 675cbd6ebc4cec6ee7edfbf01f225fd8c37e7c5d..27135650668613b71d814ca222eaf1b0e663ffbc 100644
--- a/base/base_nacl.gyp
+++ b/base/base_nacl.gyp
@@ -41,6 +41,7 @@
           },
           'dependencies': [
             'base.gyp:base_debugging_flags',
+            'base.gyp:base_build_date',
           ],
         },
         {
@@ -63,6 +64,7 @@
             ],
           },
           'dependencies': [
+            'base.gyp:base_build_date',
             '../third_party/icu/icu_nacl.gyp:icudata_nacl',
             '../third_party/icu/icu_nacl.gyp:icui18n_nacl',
             '../third_party/icu/icu_nacl.gyp:icuuc_nacl',
@@ -118,6 +120,7 @@
           ],
           'dependencies': [
             'base.gyp:base_debugging_flags',
+            'base.gyp:base_build_date',
             'third_party/libevent/libevent_nacl_nonsfi.gyp:event_nacl_nonsfi',
           ],
         },
@@ -141,6 +144,7 @@
             ],
           },
           'dependencies': [
+            'base.gyp:base_build_date',
             'base_nacl_nonsfi',
             '../testing/gtest_nacl.gyp:gtest_nacl',
           ],