Create direct write font proxy classes and unit tests.

content/test/dwrite_font_fake_sender_win.cc

Index: content/test/dwrite_font_fake_sender_win.cc
diff --git a/content/test/dwrite_font_fake_sender_win.cc b/content/test/dwrite_font_fake_sender_win.cc
new file mode 100644
index 0000000000000000000000000000000000000000..83203af354f77704ba72b02ef407bdb4adc13aee
--- /dev/null
+++ b/content/test/dwrite_font_fake_sender_win.cc
@@ -0,0 +1,174 @@
+// Copyright 2015 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/test/dwrite_font_fake_sender_win.h"
+
+#include <shlobj.h>
+
+#include "content/common/dwrite_font_proxy_messages.h"
+
+namespace content {
+
+void AddFamily(const base::string16& font_path,
+               const base::string16& family_name,
+               const base::string16& base_family_name,
+               FakeFontCollection* collection) {
+  collection->AddFont(family_name)
+      .AddFamilyName(L"en-us", family_name)
+      .AddFilePath(font_path + L"\\" + base_family_name + L".ttf")
+      .AddFilePath(font_path + L"\\" + base_family_name + L"bd.ttf")
+      .AddFilePath(font_path + L"\\" + base_family_name + L"bi.ttf")
+      .AddFilePath(font_path + L"\\" + base_family_name + L"i.ttf");
+}
+
+IPC::Sender* CreateFakeCollectionSender() {
+  std::vector<base::char16> font_path_chars;
+  font_path_chars.resize(MAX_PATH);
+  SHGetSpecialFolderPath(nullptr /* hwndOwner - reserved */,
+                         font_path_chars.data(), CSIDL_FONTS,
+                         FALSE /* fCreate */);
+  base::string16 font_path(font_path_chars.data());
+  scoped_refptr<FakeFontCollection> fake_collection = new FakeFontCollection();
+  AddFamily(font_path, L"Arial", L"arial", fake_collection.get());
+  AddFamily(font_path, L"Courier New", L"cour", fake_collection.get());
+  AddFamily(font_path, L"Times New Roman", L"times", fake_collection.get());
+  return fake_collection->GetSender();
+}
+
+FakeFont::FakeFont(const base::string16& name) : font_name_(name) {}
+
+FakeFont::~FakeFont() = default;
+
+FakeFontCollection::FakeFontCollection() = default;
+
+FakeFont& FakeFontCollection::AddFont(const base::string16& font_name) {
+  fonts_.emplace_back(font_name);
+  return fonts_.back();
+}
+
+size_t FakeFontCollection::MessageCount() {
+  return messages_.size();
+}
+
+IPC::Message* FakeFontCollection::GetMessage(size_t index) {
+  return messages_[index].get();
+}
+
+IPC::Sender* FakeFontCollection::GetSender() {
+  return new FakeSender(this, false /* track_messages */);
+}
+
+IPC::Sender* FakeFontCollection::GetTrackingSender() {
+  return new FakeSender(this, true /* track_messages */);
+}
+
+FakeFontCollection::ReplySender::ReplySender(FakeFontCollection* collection)
+    : collection_(collection) {}
+
+FakeFontCollection::ReplySender::~ReplySender() = default;
+
+scoped_ptr<IPC::Message>& FakeFontCollection::ReplySender::OnMessageReceived(
+    const IPC::Message& msg) {
+  reply_.reset();
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP(ReplySender, msg)
+    IPC_MESSAGE_HANDLER(DWriteFontProxyMsg_FindFamily, OnFindFamily)
+    IPC_MESSAGE_HANDLER(DWriteFontProxyMsg_GetFamilyCount, OnGetFamilyCount)
+    IPC_MESSAGE_HANDLER(DWriteFontProxyMsg_GetFamilyNames, OnGetFamilyNames)
+    IPC_MESSAGE_HANDLER(DWriteFontProxyMsg_GetFontFiles, OnGetFontFiles)
+    IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP()
+  return reply_;
+}
+
+bool FakeFontCollection::ReplySender::Send(IPC::Message* msg) {
+  reply_.reset(msg);
+  return true;
+}
+
+void FakeFontCollection::ReplySender::OnFindFamily(
+    const base::string16& family_name,
+    uint32_t* index) {
+  collection_->OnFindFamily(family_name, index);
+}
+
+void FakeFontCollection::ReplySender::OnGetFamilyCount(uint32_t* count) {
+  collection_->OnGetFamilyCount(count);
+}
+
+void FakeFontCollection::ReplySender::OnGetFamilyNames(
+    uint32_t family_index,
+    std::vector<DWriteStringPair>* family_names) {
+  collection_->OnGetFamilyNames(family_index, family_names);
+}
+
+void FakeFontCollection::ReplySender::OnGetFontFiles(
+    uint32_t family_index,
+    std::vector<base::string16>* file_paths) {
+  collection_->OnGetFontFiles(family_index, file_paths);
+}
+
+FakeFontCollection::FakeSender::FakeSender(FakeFontCollection* collection,
+                                           bool track_messages)
+    : track_messages_(track_messages), collection_(collection) {}
+
+FakeFontCollection::FakeSender::~FakeSender() = default;
+
+bool FakeFontCollection::FakeSender::Send(IPC::Message* message) {
+  std::unique_ptr<IPC::Message> incoming_message;
+  if (track_messages_)
+    collection_->messages_.emplace_back(message);
+  else
+    incoming_message.reset(message);  // Ensure message is deleted.
+  std::unique_ptr<ReplySender> sender = collection_->GetReplySender();
+  scoped_ptr<IPC::Message> reply;
+  reply.swap(sender->OnMessageReceived(*message));
+
+  IPC::SyncMessage* sync_message = reinterpret_cast<IPC::SyncMessage*>(message);
+  scoped_ptr<IPC::MessageReplyDeserializer> serializer(
+      sync_message->GetReplyDeserializer());
+  serializer->SerializeOutputParameters(*(reply.get()));
+  return true;
+}
+
+void FakeFontCollection::OnFindFamily(const base::string16& family_name,
+                                      uint32_t* index) {
+  for (size_t n = 0; n < fonts_.size(); n++) {
+    if (_wcsicmp(family_name.data(), fonts_[n].font_name_.data()) == 0) {
+      *index = n;
+      return;
+    }
+  }
+  *index = UINT32_MAX;
+}
+
+void FakeFontCollection::OnGetFamilyCount(uint32_t* count) {
+  *count = fonts_.size();
+}
+
+void FakeFontCollection::OnGetFamilyNames(
+    uint32_t family_index,
+    std::vector<DWriteStringPair>* family_names) {
+  if (family_index >= fonts_.size())
+    return;
+  *family_names = fonts_[family_index].family_names_;
+}
+
+void FakeFontCollection::OnGetFontFiles(
+    uint32_t family_index,
+    std::vector<base::string16>* file_paths) {
+  if (family_index >= fonts_.size())
+    return;
+  *file_paths = fonts_[family_index].file_paths_;
+}
+
+std::unique_ptr<FakeFontCollection::ReplySender>
+FakeFontCollection::GetReplySender() {
+  return std::unique_ptr<FakeFontCollection::ReplySender>(
+      new FakeFontCollection::ReplySender(this));
+}
+
+FakeFontCollection::~FakeFontCollection() = default;
+
+}  // namespace content