[content shell] Add layout test specific font setup (for linux only right now)

content/shell/webkit_test_platform_support_linux.cc

Index: content/shell/webkit_test_platform_support_linux.cc
diff --git a/content/shell/webkit_test_platform_support_linux.cc b/content/shell/webkit_test_platform_support_linux.cc
new file mode 100644
index 0000000000000000000000000000000000000000..5d2c4973ac590d1d55e9686e4cbe777cbd969fe3
--- /dev/null
+++ b/content/shell/webkit_test_platform_support_linux.cc
@@ -0,0 +1,140 @@
+// Copyright (c) 2012 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.
+
+#include "content/shell/webkit_test_platform_support.h"
+
+#include <iostream>
+
+#include <fontconfig/fontconfig.h>
+#include <unistd.h>
+
+#include "base/file_path.h"
+#include "base/file_path.h"
+#include "base/path_service.h"
+
+namespace {
+
+bool CheckAndLoadFontFile(
+    FcConfig* fontcfg, const char* path1, const char* path2) {
+  const char* font = path1;
+  if (access(font, R_OK) < 0) {
+    font = path2;
+    if (access(font, R_OK) < 0) {
+      std::cerr << "Your are missing " << path1 << " or " << path2 << ". "
+                << "Without this, some layout tests may fail. See "
+                << "http://code.google.com/p/chromium/wiki/LayoutTestsLinux "
+                << "for more.\n";
+      return false;
+    }
+  }
+  if (!FcConfigAppFontAddFile(
+          fontcfg, reinterpret_cast<const FcChar8*>(font))) {
+    std::cerr << "Failed to load font " << font << "\n";
+    return false;
+  }
+  return true;
+}
+
+const char* const kFonts[] = {
+    "/usr/share/fonts/truetype/kochi/kochi-gothic.ttf",
+    "/usr/share/fonts/truetype/kochi/kochi-mincho.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Arial.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Arial_Bold.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Arial_Bold_Italic.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Arial_Italic.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Comic_Sans_MS.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Comic_Sans_MS_Bold.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Courier_New.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Courier_New_Bold.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Courier_New_Bold_Italic.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Courier_New_Italic.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Georgia.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Georgia_Bold.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Georgia_Bold_Italic.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Georgia_Italic.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Impact.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Trebuchet_MS.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Trebuchet_MS_Bold.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Trebuchet_MS_Bold_Italic.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Trebuchet_MS_Italic.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Times_New_Roman.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Times_New_Roman_Bold.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Times_New_Roman_Bold_Italic.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Times_New_Roman_Italic.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Verdana.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Verdana_Bold.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Verdana_Bold_Italic.ttf",
+    "/usr/share/fonts/truetype/msttcorefonts/Verdana_Italic.ttf",
+    // The DejaVuSans font is used by the css2.1 tests.
+    "/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf",
+    "/usr/share/fonts/truetype/ttf-indic-fonts-core/lohit_hi.ttf",
+    "/usr/share/fonts/truetype/ttf-indic-fonts-core/lohit_ta.ttf",
+    "/usr/share/fonts/truetype/ttf-indic-fonts-core/MuktiNarrow.ttf",
+};
+
+bool SetupFontConfig() {
+  FcInit();
+
+  FilePath base_path;
+  PathService::Get(base::DIR_MODULE, &base_path);
+  FilePath fonts_conf = base_path.Append(FILE_PATH_LITERAL("fonts.conf"));
+
+  FcConfig* font_config = FcConfigCreate();
+  if (!FcConfigParseAndLoad(
+          font_config,
+          reinterpret_cast<const FcChar8*>(fonts_conf.value().c_str()),
+          true)) {
+    std::cerr << "Failed to parse fontconfig config file\n";
+    return false;
+  }
+
+  for (size_t i = 0; i < arraysize(kFonts); ++i) {
+    if (access(kFonts[i], R_OK) < 0) {
+      std::cerr << "You are missing " << kFonts[i] << ". Try re-running "
+                << "build/install-build-deps.sh. Also see "
+                << "http://code.google.com/p/chromium/wiki/LayoutTestsLinux";
+      return false;
+    }
+    if (!FcConfigAppFontAddFile(
+            font_config, reinterpret_cast<const FcChar8*>(kFonts[i]))) {
+      std::cerr << "Failed to load font " << kFonts[i] << "\n";
+      return false;
+    }
+  }
+
+  if (!CheckAndLoadFontFile(
+          font_config,
+          "/usr/share/fonts/truetype/thai/Garuda.ttf",
+          "/usr/share/fonts/truetype/tlwg/Garuda.ttf")) {
+    return false;
+  }
+
+  // We special case these fonts because they're only needed in a few layout
+  // tests.
+  CheckAndLoadFontFile(
+     font_config,
+     "/usr/share/fonts/truetype/ttf-indic-fonts-core/lohit_pa.ttf",
+     "/usr/share/fonts/truetype/ttf-punjabi-fonts/lohit_pa.ttf");
+
+  FilePath ahem_font = base_path.Append("AHEM____.TTF");
+  if (!FcConfigAppFontAddFile(
+          font_config,
+          reinterpret_cast<const FcChar8*>(ahem_font.value().c_str()))) {
+    std::cerr << "Failed to load font " << ahem_font.value() << "\n";
+    return false;
+  }
+
+  if (!FcConfigSetCurrent(font_config)) {
+    std::cerr << "Failed to set the default font configuration\n";
+    return false;
+  }
+
+  return true;
+}
+
+}  // namespace
+
+bool WebKitTestPlatformInitialize() {
+  return SetupFontConfig();
+}