Revert of Remove remote tree host and some related input and metro_driver code

win8/metro_driver/metro_driver.cc

Index: win8/metro_driver/metro_driver.cc
diff --git a/win8/metro_driver/metro_driver.cc b/win8/metro_driver/metro_driver.cc
new file mode 100644
index 0000000000000000000000000000000000000000..650b23837612ff9539939730c9b113da5a24c525
--- /dev/null
+++ b/win8/metro_driver/metro_driver.cc
@@ -0,0 +1,135 @@
+// 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 "stdafx.h"
+#include "win8/metro_driver/metro_driver.h"
+
+#include <roerrorapi.h>
+#include <shobjidl.h>
+
+#include "base/at_exit.h"
+#include "base/command_line.h"
+#include "base/logging.h"
+#include "base/logging_win.h"
+#include "base/win/scoped_comptr.h"
+#include "base/win/windows_version.h"
+#include "win8/metro_driver/winrt_utils.h"
+
+namespace {
+
+#if !defined(NDEBUG)
+LONG WINAPI ErrorReportingHandler(EXCEPTION_POINTERS* ex_info) {
+  // See roerrorapi.h for a description of the
+  // exception codes and parameters.
+  DWORD code = ex_info->ExceptionRecord->ExceptionCode;
+  ULONG_PTR* info = ex_info->ExceptionRecord->ExceptionInformation;
+  if (code == EXCEPTION_RO_ORIGINATEERROR) {
+    base::string16 msg(reinterpret_cast<wchar_t*>(info[2]), info[1]);
+    LOG(ERROR) << "VEH: Metro error 0x" << std::hex << info[0] << ": " << msg;
+  } else if (code == EXCEPTION_RO_TRANSFORMERROR) {
+    base::string16 msg(reinterpret_cast<wchar_t*>(info[3]), info[2]);
+    LOG(ERROR) << "VEH: Metro old error 0x" << std::hex << info[0]
+               << " new error 0x" << info[1] << ": " << msg;
+  }
+
+  return EXCEPTION_CONTINUE_SEARCH;
+}
+#endif
+
+void SetMetroReportingFlags() {
+#if !defined(NDEBUG)
+  // Set the error reporting flags to always raise an exception,
+  // which is then processed by our vectored exception handling
+  // above to log the error message.
+  winfoundtn::Diagnostics::SetErrorReportingFlags(
+      winfoundtn::Diagnostics::UseSetErrorInfo |
+      winfoundtn::Diagnostics::ForceExceptions);
+#endif
+}
+
+// TODO(robertshield): This GUID is hard-coded in a bunch of places that
+//     don't allow explicit includes. Find a single place for it to live.
+// {7FE69228-633E-4f06-80C1-527FEA23E3A7}
+const GUID kChromeTraceProviderName = {
+    0x7fe69228, 0x633e, 0x4f06,
+        { 0x80, 0xc1, 0x52, 0x7f, 0xea, 0x23, 0xe3, 0xa7 } };
+
+}  // namespace
+
+#if !defined(COMPONENT_BUILD)
+// Required for base initialization.
+// TODO(siggi): This should be handled better, as this way our at exit
+//     registrations will run under the loader's lock. However,
+//     once metro_driver is merged into Chrome.dll, this will go away anyhow.
+base::AtExitManager at_exit;
+#endif
+
+mswr::ComPtr<winapp::Core::ICoreApplication> InitWindows8() {
+  SetMetroReportingFlags();
+  HRESULT hr = ::Windows::Foundation::Initialize(RO_INIT_MULTITHREADED);
+  if (FAILED(hr))
+    CHECK(false);
+  mswr::ComPtr<winapp::Core::ICoreApplication> core_app;
+  hr = winrt_utils::CreateActivationFactory(
+      RuntimeClass_Windows_ApplicationModel_Core_CoreApplication,
+      core_app.GetAddressOf());
+  if (FAILED(hr))
+    CHECK(false);
+  return core_app;
+}
+
+mswr::ComPtr<winapp::Core::ICoreApplication> InitWindows7();
+
+extern "C" __declspec(dllexport)
+int InitMetro() {
+  // Metro mode or its emulation is not supported in Vista or XP.
+  if (base::win::GetVersion() < base::win::VERSION_WIN7)
+    return 1;
+  // Initialize the command line.
+  base::CommandLine::Init(0, NULL);
+  // Initialize the logging system.
+  logging::LoggingSettings settings;
+  settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
+  logging::InitLogging(settings);
+#if defined(NDEBUG)
+  logging::SetMinLogLevel(logging::LOG_ERROR);
+#else
+  logging::SetMinLogLevel(logging::LOG_VERBOSE);
+    HANDLE registration =
+      ::AddVectoredExceptionHandler(TRUE, ErrorReportingHandler);
+#endif
+  // Enable trace control and transport through event tracing for Windows.
+  logging::LogEventProvider::Initialize(kChromeTraceProviderName);
+  DVLOG(1) << "InitMetro";
+
+  // OS specific initialization.
+  mswr::ComPtr<winapp::Core::ICoreApplication> core_app;
+  if (base::win::GetVersion() < base::win::VERSION_WIN8)
+    core_app = InitWindows7();
+  else
+    core_app = InitWindows8();
+
+  auto view_factory = mswr::Make<ChromeAppViewFactory>(core_app.Get());
+  HRESULT hr = core_app->Run(view_factory.Get());
+  DVLOG(1) << "exiting InitMetro, hr=" << hr;
+
+#if !defined(NDEBUG)
+  ::RemoveVectoredExceptionHandler(registration);
+#endif
+  return hr;
+}
+
+// Activates the application known by |app_id|.  Returns, among other things,
+// E_APPLICATION_NOT_REGISTERED if |app_id| identifies Chrome and Chrome is not
+// the default browser.
+extern "C" __declspec(dllexport)
+HRESULT ActivateApplication(const wchar_t* app_id) {
+  base::win::ScopedComPtr<IApplicationActivationManager> activator;
+  HRESULT hr = activator.CreateInstance(CLSID_ApplicationActivationManager);
+  if (SUCCEEDED(hr)) {
+    DWORD pid = 0;
+    hr = activator->ActivateApplication(app_id, L"", AO_NONE, &pid);
+  }
+  return hr;
+}