Integrate the Windows 8 code into the Chromium tree.

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..89bd35a5f765da39a519a66ce1a4c9cc6386637a
--- /dev/null
+++ b/win8/metro_driver/metro_driver.cc
@@ -0,0 +1,211 @@
+// 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 <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 "win8/metro_driver/chrome_app_view.h"
+#include "win8/metro_driver/winrt_utils.h"
+#include "sandbox/win/src/sidestep/preamble_patcher.h"
+
+// TODO(siggi): Move this to GYP.
+#pragma comment(lib, "runtimeobject.lib")
+
+namespace {
+
+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) {
+    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) {
+    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;
+}
+
+// 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 } };
+
+}
+// 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;
+
+namespace Hacks {
+
+typedef BOOL (WINAPI* IsImmersiveFunctionPtr)(HANDLE process);
+char* g_real_is_immersive_proc_stub = NULL;
+
+HMODULE g_webrtc_quartz_dll_handle = NULL;
+bool g_fake_is_immersive_process_ret = false;
+
+BOOL WINAPI MetroChromeIsImmersiveIntercept(HANDLE process) {
+  if (g_fake_is_immersive_process_ret && process == ::GetCurrentProcess())
+    return FALSE;
+
+  IsImmersiveFunctionPtr real_proc =
+      reinterpret_cast<IsImmersiveFunctionPtr>(
+          static_cast<char*>(g_real_is_immersive_proc_stub));
+  return real_proc(process);
+}
+
+void MetroSpecificHacksInitialize() {
+  // The quartz dll which is used by the webrtc code in Chrome fails in a metro
+  // app. It checks this via the IsImmersiveProcess export in user32. We
+  // intercept the same and spoof the value as false. This is ok as technically
+  // a metro browser is not a real metro application. The webrtc functionality
+  // works fine with this hack.
+  // TODO(tommi)
+  // BUG:- https://code.google.com/p/chromium/issues/detail?id=140545
+  // We should look into using media foundation on windows 8 in metro chrome.
+  IsImmersiveFunctionPtr is_immersive_func_address =
+      reinterpret_cast<IsImmersiveFunctionPtr>(::GetProcAddress(
+          ::GetModuleHandle(L"user32.dll"), "IsImmersiveProcess"));
+  DCHECK(is_immersive_func_address);
+
+  // Allow the function to be patched by changing the protections on the page.
+  DWORD old_protect = 0;
+  ::VirtualProtect(is_immersive_func_address, 5, PAGE_EXECUTE_READWRITE,
+                   &old_protect);
+
+  DCHECK(g_real_is_immersive_proc_stub == NULL);
+  g_real_is_immersive_proc_stub = reinterpret_cast<char*>(VirtualAllocEx(
+      ::GetCurrentProcess(), NULL, sidestep::kMaxPreambleStubSize,
+      MEM_COMMIT, PAGE_EXECUTE_READWRITE));
+  DCHECK(g_real_is_immersive_proc_stub);
+
+  sidestep::SideStepError patch_result =
+      sidestep::PreamblePatcher::Patch(
+          is_immersive_func_address, MetroChromeIsImmersiveIntercept,
+          g_real_is_immersive_proc_stub, sidestep::kMaxPreambleStubSize);
+
+  DCHECK(patch_result == sidestep::SIDESTEP_SUCCESS);
+
+  // Restore the permissions on the page in user32 containing the
+  // IsImmersiveProcess function code.
+  DWORD dummy = 0;
+  ::VirtualProtect(is_immersive_func_address, 5, old_protect, &dummy);
+
+  // Mimic the original page permissions from the IsImmersiveProcess page
+  // on our stub.
+  ::VirtualProtect(g_real_is_immersive_proc_stub,
+                   sidestep::kMaxPreambleStubSize,
+                   old_protect,
+                   &old_protect);
+
+  g_fake_is_immersive_process_ret = true;
+  g_webrtc_quartz_dll_handle = LoadLibrary(L"quartz.dll");
+  g_fake_is_immersive_process_ret = false;
+
+  DCHECK(g_webrtc_quartz_dll_handle);
+  if (!g_webrtc_quartz_dll_handle) {
+    DVLOG(1) << "Quartz dll load failed with error: " << GetLastError();
+  } else {
+    // Pin the quartz module to protect against it being inadvarently unloaded.
+    ::GetModuleHandleEx(GET_MODULE_HANDLE_EX_FLAG_PIN, L"quartz.dll",
+                        &g_webrtc_quartz_dll_handle);
+  }
+}
+
+}  // namespace Hacks
+
+extern "C" __declspec(dllexport)
+int InitMetro(LPTHREAD_START_ROUTINE thread_proc, void* context) {
+  // Initialize the command line.
+  CommandLine::Init(0, NULL);
+  logging::InitLogging(
+        NULL,
+        logging::LOG_ONLY_TO_SYSTEM_DEBUG_LOG,
+        logging::LOCK_LOG_FILE,
+        logging::DELETE_OLD_LOG_FILE,
+        logging::DISABLE_DCHECK_FOR_NON_OFFICIAL_RELEASE_BUILDS);
+
+#if defined(NDEBUG)
+  logging::SetMinLogLevel(logging::LOG_ERROR);
+  // Bind to the breakpad handling function.
+  globals.breakpad_exception_handler =
+      reinterpret_cast<BreakpadExceptionHandler>(
+          ::GetProcAddress(::GetModuleHandle(NULL),
+                           "CrashForException"));
+  if (!globals.breakpad_exception_handler) {
+    DVLOG(0) << "CrashForException export not found";
+  }
+#else
+  logging::SetMinLogLevel(logging::LOG_VERBOSE);
+  // 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);
+
+  HANDLE registration =
+      ::AddVectoredExceptionHandler(TRUE, ErrorReportingHandler);
+#endif
+
+  // Enable trace control and transport through event tracing for Windows.
+  logging::LogEventProvider::Initialize(kChromeTraceProviderName);
+
+  DVLOG(1) << "InitMetro";
+
+  mswrw::RoInitializeWrapper ro_initializer(RO_INIT_MULTITHREADED);
+  CheckHR(ro_initializer, "RoInitialize failed");
+
+  mswr::ComPtr<winapp::Core::ICoreApplication> core_app;
+  HRESULT hr = winrt_utils::CreateActivationFactory(
+      RuntimeClass_Windows_ApplicationModel_Core_CoreApplication,
+      core_app.GetAddressOf());
+  CheckHR(hr, "Failed to create app factory");
+  if (FAILED(hr))
+    return 1;
+
+  // The metro specific hacks code assumes that there is only one thread active
+  // at the moment. This better be the case or we may have race conditions.
+  Hacks::MetroSpecificHacksInitialize();
+
+  auto view_factory = mswr::Make<ChromeAppViewFactory>(
+      core_app.Get(), thread_proc, context);
+  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;
+}