Revert 271721 "VS2013 Update 2"

trunk/src/chrome/chrome_tests_unit.gypi

Index: trunk/src/chrome/chrome_tests_unit.gypi
===================================================================
--- trunk/src/chrome/chrome_tests_unit.gypi	(revision 271736)
+++ trunk/src/chrome/chrome_tests_unit.gypi	(working copy)
@@ -2424,6 +2424,7 @@
           'dependencies': [
             'chrome_version_resources',
             'installer_util_strings',
+            'unit_tests_exe_pdb_workaround',
             '../third_party/iaccessible2/iaccessible2.gyp:iaccessible2',
             '../third_party/isimpledom/isimpledom.gyp:isimpledom',
           ],
@@ -2821,5 +2822,24 @@
         },
       ],
     }],
+    ['OS=="win"', {
+      'targets' : [
+        {
+          # This target is only depended upon on Windows.
+          'target_name': 'unit_tests_exe_pdb_workaround',
+          'type': 'static_library',
+          'sources': [ 'empty_pdb_workaround.cc' ],
+          'msvs_settings': {
+            'VCCLCompilerTool': {
+              # This *in the compile phase* must match the pdb name that's
+              # output by the final link. See empty_pdb_workaround.cc for
+              # more details.
+              'DebugInformationFormat': '3',
+              'ProgramDataBaseFileName': '<(PRODUCT_DIR)/unit_tests.exe.pdb',
+            },
+          },
+        },
+      ],
+    }],
   ],  # 'conditions'
 }