Remove the WebGlyphCache API.

third_party/WebKit/public/blink_headers.gypi

 # Copyright 2015 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.
 
 {
   'variables': {
     'blink_public_sources': [
       "platform/Platform.h",
       "platform/WebApplicationCacheHost.h",
       "platform/WebApplicationCacheHostClient.h",
@@ skipping 384 matching lines @@
       "web/WebFrameClient.h",
       "web/WebFrameLoadType.h",
       "web/WebFrameOwnerProperties.h",
       "web/WebFrameWidget.h",
       "web/WebGeolocationClient.h",
       "web/WebGeolocationController.h",
       "web/WebGeolocationError.h",
       "web/WebGeolocationPermissionRequest.h",
       "web/WebGeolocationPermissionRequestManager.h",
       "web/WebGeolocationPosition.h",
-      "web/WebGlyphCache.h",
       "web/WebHeap.h",
       "web/WebHelperPlugin.h",
       "web/WebHistoryCommitType.h",
       "web/WebHistoryItem.h",
       "web/WebHitTestResult.h",
       "web/WebIconURL.h",
       "web/WebImageCache.h",
       "web/WebImageDecoder.h",
       "web/WebInputElement.h",
       "web/WebInputEvent.h",
@@ skipping 97 matching lines @@
       "web/mac/WebScrollbarTheme.h",
       "web/mac/WebSubstringUtil.h",
       "web/modules/notifications/WebNotificationPermissionCallback.h",
       "web/modules/serviceworker/WebServiceWorkerContextClient.h",
       "web/modules/serviceworker/WebServiceWorkerContextProxy.h",
       "web/modules/serviceworker/WebServiceWorkerNetworkProvider.h",
       "web/win/WebFontRendering.h",
     ],
   },
 }