Allow incrementally linked release builds on windows.

build/release.gypi

Index: build/release.gypi
diff --git a/build/release.gypi b/build/release.gypi
index 7595ef5a297247298b6353873922575300e01787..9b8b11d20f3a4d3207e40517c3e4511c8ab706f0 100644
--- a/build/release.gypi
+++ b/build/release.gypi
@@ -4,6 +4,18 @@
     ['buildtype=="Dev"', {
       'includes': ['internal/release_impl.gypi'],
     }],
+    ['buildtype=="Dev" and incremental_chrome_dll==1', {
+      'msvs_settings': {
+        'VCLinkerTool': {
+          # Enable incremental linking and disable conflicting link options:
+          # http://msdn.microsoft.com/en-us/library/4khtbfyf.aspx
+          'LinkIncremental': '2',
+          'OptimizeReferences': '1',
+          'EnableCOMDATFolding': '1',
+          'Profile': 'false',
+        },
+      },
+    }],
     ['buildtype=="Official"', {
       'includes': ['internal/release_impl_official.gypi'],
     }],