Implement support for loading font files from outside system directory

content/public/common/content_switches.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "build/build_config.h"
 #include "content/public/common/content_switches.h"
 
 namespace switches {
 
 // The number of MSAA samples for canvas2D. Requires MSAA support by GPU to
@@ skipping 99 matching lines @@
 
 // Disable one or more Blink runtime-enabled features.
 // Use names from RuntimeEnabledFeatures.in, separated by commas.
 // Applied after kEnableBlinkFeatures, and after other flags that change these
 // features.
 const char kDisableBlinkFeatures[]          = "disable-blink-features";
 
 // Disables HTML5 DB support.
 const char kDisableDatabases[]              = "disable-databases";
 
+// Controls the loading of font files installed outside the system fonts dir.
+//   Disable: blocks loading font files from outside system fonts dir.
+//   Force: forces all fonts to use the custom font file codepath.

[nasko, 2016/07/22 23:51:29]

What is the default behavior when the flag isn't present?

[Ilya Kulshin, 2016/07/25 21:22:45]

Acknowledged.

+const char kDisableDirectWriteCustomFonts[] =
+    "disable-directwrite-custom-fonts";
+const char kForceDirectWriteCustomFonts[] = "force-directwrite-custom-fonts";

[nasko, 2016/07/22 23:51:29]

This needs to be put in alphabetical order.

[Ilya Kulshin, 2016/07/25 21:22:45]

Acknowledged.

+
 // Disable the per-domain blocking for 3D APIs after GPU reset.
 // This switch is intended only for tests.
 const char kDisableDomainBlockingFor3DAPIs[] =
     "disable-domain-blocking-for-3d-apis";
 
 // Disable experimental WebGL support.
 const char kDisableExperimentalWebGL[]      = "disable-webgl";
 
 // Comma-separated list of feature names to disable. See also kEnableFeatures.
 const char kDisableFeatures[]               = "disable-features";
@@ skipping 939 matching lines @@
 // the given directory. Used primarily to gather samples for IPC fuzzing.
 const char kIpcDumpDirectory[] = "ipc-dump-directory";
 
 // Specifies the testcase used by the IPC fuzzer.
 const char kIpcFuzzerTestcase[] = "ipc-fuzzer-testcase";
 #endif
 
 // Don't dump stuff here, follow the same order as the header.
 
 }  // namespace switches