Add HiDPI flag for Windows.

The flag is currently disabled by default.

BUG=243445

Review URL: https://chromiumcodereview.appspot.com/16196008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@204939 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index 0ad69f6..9beac908 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -1516,6 +1516,14 @@
     kOsAll,
     SINGLE_VALUE_TYPE(switches::kEnableWebGLDraftExtensions)
   },
+  {
+    "high-dpi-support",
+    IDS_FLAGS_HIDPI_NAME,
+    IDS_FLAGS_HIDPI_DESCRIPTION,
+    kOsWin,
+    ENABLE_DISABLE_VALUE_TYPE_AND_VALUE(switches::kHighDPISupport,"1",
+        switches::kHighDPISupport,"0")
+  },
 };
 
 const Experiment* experiments = kExperiments;