Implement API for accessing fonts installed locally on the system.

content/renderer/font_access/web_font_access_impl.h

Index: content/renderer/font_access/web_font_access_impl.h
diff --git a/content/renderer/font_access/web_font_access_impl.h b/content/renderer/font_access/web_font_access_impl.h
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+++ b/content/renderer/font_access/web_font_access_impl.h
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+// Copyright 2016 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.
+
+#ifndef CONTENT_RENDERER_FONT_ACCESS_WEB_FONT_ACCESS_IMPL_H_
+#define CONTENT_RENDERER_FONT_ACCESS_WEB_FONT_ACCESS_IMPL_H_
+
+#include "base/compiler_specific.h"
+#include "content/common/content_export.h"
+#include "content/common/font_access/font_access_service.mojom.h"
+#include "mojo/public/cpp/bindings/lib/buffer.h"
+#include "third_party/WebKit/public/platform/modules/font_access/WebFontAccess.h"
+
+namespace content {
+
+class CONTENT_EXPORT WebFontAccessImpl final
+    : NON_EXPORTED_BASE(public blink::WebFontAccess) {
+ public:
+  WebFontAccessImpl();
+  ~WebFontAccessImpl() override;
+
+  void getFonts(blink::FontAccessCallbacks*) override;
+  void getFontWebData(const blink::WebString& family,
+                      const blink::WebString& style,
+                      blink::FontDataCallbacks*) override;
+
+ private:
+  void FontListHasLoaded(scoped_ptr<blink::FontAccessCallbacks> callbacks,
+                         mojo::Array<FontDescriptionPtr> fonts);
+  void FontDataHasLoaded(scoped_ptr<blink::FontDataCallbacks> callbacks,
+                         mojo::ScopedSharedBufferHandle handle,
+                         uint64_t size);
+
+  FontAccessServicePtr& GetService();
+
+  FontAccessServicePtr provider_;
+
+  DISALLOW_COPY_AND_ASSIGN(WebFontAccessImpl);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_FONT_ACCESS_WEB_FONT_ACCESS_IMPL_H_