chrome_initial does not need //ui/gfx on Windows.

chrome.exe appears to have grown by 150% when skia rolled in r411308.
chrome.exe shouldn't need skia or gfx, so let's try not depending on
them!

BUG=647223
R=brucedawson@chromium.org

Review-Url: https://codereview.chromium.org/2345503006
Cr-Commit-Position: refs/heads/master@{#418986}

chrome/BUILD.gn

@@ -177,7 +177,6 @@ if (!is_android && !is_mac) {
         "//content/public/common:static_switches",
         "//crypto",
         "//sandbox",
-        "//ui/gfx",
       ]
       data_deps = [
         "//chrome/app/version_assembly:version_assembly_manifest",