Support sideloaded fonts via command line option for blink layout_tests

content/shell/renderer/shell_content_renderer_client.cc

Index: content/shell/renderer/shell_content_renderer_client.cc
diff --git a/content/shell/renderer/shell_content_renderer_client.cc b/content/shell/renderer/shell_content_renderer_client.cc
index 341fc2320a9b556cc7df018951cbae69a291467e..2c71f29077c692da4937c4775fd3e669812b5836 100644
--- a/content/shell/renderer/shell_content_renderer_client.cc
+++ b/content/shell/renderer/shell_content_renderer_client.cc
@@ -12,6 +12,7 @@
 #include "content/public/renderer/render_view.h"
 #include "content/public/test/layouttest_support.h"
 #include "content/shell/common/shell_switches.h"
+#include "content/shell/common/webkit_test_helpers.h"
 #include "content/shell/renderer/shell_render_frame_observer.h"
 #include "content/shell/renderer/shell_render_process_observer.h"
 #include "content/shell/renderer/shell_render_view_observer.h"
@@ -25,6 +26,12 @@
 #include "third_party/WebKit/public/web/WebView.h"
 #include "v8/include/v8.h"
 
+#if defined(OS_WIN)
+#include "content/public/renderer/render_font_warmup_win.h"
+#include "third_party/WebKit/public/web/win/WebFontRendering.h"
+#include "third_party/skia/include/ports/SkFontMgr.h"
+#endif
+
 using blink::WebAudioDevice;
 using blink::WebClipboard;
 using blink::WebLocalFrame;
@@ -43,12 +50,35 @@ using WebTestRunner::WebTestProxyBase;
 
 namespace content {
 
+#if defined(OS_WIN)
+namespace {
+
+// DirectWrite only has access to %WINDIR%\Fonts by default. For developer
+// side-loading, support kRegisterFontFiles to allow access to additional fonts.
+void RegisterSideloadedTypefaces(SkFontMgr* fontmgr) {
+  std::vector<std::string> files = GetSideloadFontFiles();
+  for (std::vector<std::string>::const_iterator i(files.begin());
+       i != files.end();
+       ++i) {
+    SkTypeface* typeface = fontmgr->createFromFile(i->c_str());
+    DoPreSandboxWarmupForTypeface(typeface);
+    blink::WebFontRendering::addSideloadedFontForTesting(typeface);
+  }
+}
+
+}  // namespace
+#endif  // OS_WIN
+
 ShellContentRendererClient::ShellContentRendererClient() {
   if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kDumpRenderTree)) {
     EnableWebTestProxyCreation(
         base::Bind(&ShellContentRendererClient::WebTestProxyCreated,
                    base::Unretained(this)));
   }
+
+#if defined(OS_WIN)
+  RegisterSideloadedTypefaces(GetPreSandboxWarmupFontMgr());
+#endif
 }
 
 ShellContentRendererClient::~ShellContentRendererClient() {