Enable icu_use_data_file on Windows

net/net.gyp

Index: net/net.gyp
diff --git a/net/net.gyp b/net/net.gyp
index 9b10a414e51a9d49a955654adf2933e556d5826d..a40f39388e3f1a285b81d6b493b446772e4aca7a 100644
--- a/net/net.gyp
+++ b/net/net.gyp
@@ -2235,14 +2235,20 @@
               'dns/dns_config_service_posix_unittest.cc',
               'http/http_auth_gssapi_posix_unittest.cc',
             ],
-            # This is needed to trigger the dll copy step on windows.
-            # TODO(mark): Specifying this here shouldn't be necessary.
             'dependencies': [
-              '../third_party/icu/icu.gyp:icudata',
               '../third_party/nss/nss.gyp:nspr',
               '../third_party/nss/nss.gyp:nss',
               'third_party/nss/ssl.gyp:libssl',
             ],
+            'conditions': [
+              [ 'icu_use_data_file_flag == 0', {
+                # This is needed to trigger the dll copy step on windows.
+                # TODO(mark): Specifying this here shouldn't be necessary.
+                'dependencies': [
+                  '../third_party/icu/icu.gyp:icudata',
+                ],
+              }],
+            ],
             # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
             'msvs_disabled_warnings': [4267, ],
           },
@@ -2341,16 +2347,19 @@
             ],
           },
         ],
-        # This is needed to trigger the dll copy step on windows.
-        # TODO(mark): Specifying this here shouldn't be necessary.
         [ 'OS == "win"', {
-            'dependencies': [
-              '../third_party/icu/icu.gyp:icudata',
+            'conditions': [
+              [ 'icu_use_data_file_flag == 0', {
+                # This is needed to trigger the dll copy step on windows.
+                # TODO(mark): Specifying this here shouldn't be necessary.
+                'dependencies': [
+                  '../third_party/icu/icu.gyp:icudata',
+                ],
+              }],
             ],
             # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
             'msvs_disabled_warnings': [4267, ],
-          },
-        ],
+        }],
       ],
     },
     {