Fix Google3 fonts.

src/ports/SkFontConfigInterface_direct_google3.cpp

+/*
+ * Copyright 2009-2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+/* migrated from chrome/src/skia/ext/SkFontHost_fontconfig_direct.cpp */
+
+#include "google_font_file_buffering.h"
+
+#include "SkFontConfigInterface_direct_google3.h"
+#include "SkStream.h"
+#include "SkString.h"
+#include "SkTypes.h"
+
+bool SkFontConfigInterfaceDirectGoogle3::isAccessible(const char* filename) {
+    // Check if this font has been pre-loaded into memory.
+    const char* unused;
+    if (GoogleFreeType::GoogleFt2ReadFontFromMemory(filename, &unused) >= 0) {
+        return true;
+    }
+    return this->INHERITED::isAccessible(filename);
+}
+
+SkStreamAsset* SkFontConfigInterfaceDirectGoogle3::openStream(const FontIdentity& identity) {
+    const char* c_filename = identity.fString.c_str();
+    // Read the system fonts from the fonts we've pre-loaded into memory.
+    const char* buffer;
+    int length = GoogleFreeType::GoogleFt2ReadFontFromMemory(
+        c_filename, &buffer);
+    if (length >= 0) return new SkMemoryStream(buffer, length);
+    return this->INHERITED::openStream(identity);
+}