[ppapi] Remove PPB_TrueTypeFont resource.

- UMA shows this interface has no usage.

This is a manual reland of:
https://chromium-review.googlesource.com/c/chromium/src/+/1546762

That was reverted due to failures on the deterministic build. Let's see if that has been fixed.

Change-Id: I4f7409dd0cb76245539d63d61e411bb35c9d1514
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2446369
Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Raymes Khoury <raymes@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Bill Budge <bbudge@chromium.org>
Cr-Commit-Position: refs/heads/master@{#814202}

chrome/common/ppapi_utils.cc

@@ -21,7 +21,6 @@
 #include "ppapi/c/dev/ppb_printing_dev.h"
 #include "ppapi/c/dev/ppb_text_input_dev.h"
 #include "ppapi/c/dev/ppb_trace_event_dev.h"
-#include "ppapi/c/dev/ppb_truetype_font_dev.h"
 #include "ppapi/c/dev/ppb_url_util_dev.h"
 #include "ppapi/c/dev/ppb_var_deprecated.h"
 #include "ppapi/c/dev/ppb_video_capture_dev.h"

chrome/test/ppapi/ppapi_browsertest.cc

@@ -2215,14 +2215,6 @@ TEST_PPAPI_NACL(MouseCursor)
 
 TEST_PPAPI_NACL(NetworkProxy)
 
-// TODO(crbug.com/619765): get working on CrOS build.
-#if defined(OS_CHROMEOS)
-#define MAYBE_TrueTypeFont DISABLED_TrueTypeFont
-#else
-#define MAYBE_TrueTypeFont TrueTypeFont
-#endif
-TEST_PPAPI_NACL(MAYBE_TrueTypeFont)
-
 // TODO(crbug.com/602875), TODO(crbug.com/602876) Flaky on Win and CrOS.
 #if defined(OS_CHROMEOS) || defined(OS_WIN)
 #define MAYBE_VideoDecoder DISABLED_VideoDecoder

content/browser/BUILD.gn

@@ -2350,17 +2350,6 @@ source_set("browser") {
       "renderer_host/pepper/pepper_tcp_server_socket_message_filter.h",
       "renderer_host/pepper/pepper_tcp_socket_message_filter.cc",
       "renderer_host/pepper/pepper_tcp_socket_message_filter.h",
-      "renderer_host/pepper/pepper_truetype_font.h",
-      "renderer_host/pepper/pepper_truetype_font_host.cc",
-      "renderer_host/pepper/pepper_truetype_font_host.h",
-      "renderer_host/pepper/pepper_truetype_font_linux.cc",
-      "renderer_host/pepper/pepper_truetype_font_list.h",
-      "renderer_host/pepper/pepper_truetype_font_list_host.cc",
-      "renderer_host/pepper/pepper_truetype_font_list_host.h",
-      "renderer_host/pepper/pepper_truetype_font_list_mac.mm",
-      "renderer_host/pepper/pepper_truetype_font_list_win.cc",
-      "renderer_host/pepper/pepper_truetype_font_mac.mm",
-      "renderer_host/pepper/pepper_truetype_font_win.cc",
       "renderer_host/pepper/pepper_udp_socket_message_filter.cc",
       "renderer_host/pepper/pepper_udp_socket_message_filter.h",
       "renderer_host/pepper/pepper_vpn_provider_message_filter_chromeos.cc",
@@ -2376,20 +2365,6 @@ source_set("browser") {
       "//ppapi/proxy:ipc",
       "//ppapi/shared_impl",
     ]
-
-    # TODO(1119772): this makes both use_x11 and use_ozone builds for is_linux use
-    # pangocairo so that PPAPINaClNewlibTest.TrueTypeFont,
-    # PPAPINaClPNaClNonSfiTest.TrueTypeFont, and OutOfProcessPPAPITest.TrueTypeFont
-    # tests continue to run normally on Linux. This also fixes these tests for
-    # Ozone/Linux, but requires to use pangocairo. We probably want to continue
-    # using pango on Linux and switch to something else for other systems that
-    # use Ozone.
-    if (use_ozone && (!is_linux || !use_pangocairo)) {
-      sources += [ "renderer_host/pepper/pepper_truetype_font_list_ozone.cc" ]
-    } else if (use_pangocairo) {
-      sources += [ "renderer_host/pepper/pepper_truetype_font_list_pango.cc" ]
-    }
-
     if (is_linux || is_chromeos) {
       deps += [ "//components/services/font:ppapi_fontconfig_matching" ]
     }

content/browser/renderer_host/pepper/content_browser_pepper_host_factory.cc

@@ -21,8 +21,6 @@
 #include "content/browser/renderer_host/pepper/pepper_printing_host.h"
 #include "content/browser/renderer_host/pepper/pepper_tcp_server_socket_message_filter.h"
 #include "content/browser/renderer_host/pepper/pepper_tcp_socket_message_filter.h"
-#include "content/browser/renderer_host/pepper/pepper_truetype_font_host.h"
-#include "content/browser/renderer_host/pepper/pepper_truetype_font_list_host.h"
 #include "content/browser/renderer_host/pepper/pepper_udp_socket_message_filter.h"
 #include "ppapi/host/message_filter_host.h"
 #include "ppapi/host/ppapi_host.h"
@@ -175,25 +173,6 @@ ContentBrowserPepperHostFactory::CreateResourceHost(
             new PepperPrintingHost(host_->GetPpapiHost(), instance, resource,
                                    std::move(manager)));
       }
-      case PpapiHostMsg_TrueTypeFont_Create::ID: {
-        ppapi::proxy::SerializedTrueTypeFontDesc desc;
-        if (!ppapi::UnpackMessage<PpapiHostMsg_TrueTypeFont_Create>(message,
-                                                                    &desc)) {
-          NOTREACHED();
-          return std::unique_ptr<ppapi::host::ResourceHost>();
-        }
-        // Check that the family name is valid UTF-8 before passing it to the
-        // host OS.
-        if (!base::IsStringUTF8(desc.family))
-          return std::unique_ptr<ppapi::host::ResourceHost>();
-
-        return std::unique_ptr<ppapi::host::ResourceHost>(
-            new PepperTrueTypeFontHost(host_, instance, resource, desc));
-      }
-      case PpapiHostMsg_TrueTypeFontSingleton_Create::ID: {
-        return std::unique_ptr<ppapi::host::ResourceHost>(
-            new PepperTrueTypeFontListHost(host_, instance, resource));
-      }
 #if defined(OS_CHROMEOS)
       case PpapiHostMsg_VpnProvider_Create::ID: {
         scoped_refptr<PepperVpnProviderMessageFilter> vpn_provider(