Remove Chrome Frame code and resources.

chrome_frame/exception_barrier.h

-// Copyright (c) 2009 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.
-//
-// A class to make it easy to tag exception propagation boundaries and
-// get crash reports of exceptions that pass over same.
-//
-// An exception barrier is used to report exceptions that pass through
-// a boundary where exceptions shouldn't pass, such as e.g. COM interface
-// boundaries.
-// This is handy for any kind of plugin code, where if the exception passes
-// through unhindered, it'll either be swallowed by an SEH exception handler
-// above us on the stack, or be reported as an unhandled exception for
-// the application hosting the plugin code.
-//
-// IMPORTANT NOTE: This class has crash_reporting disabled by default. To
-// enable crash reporting call:
-//
-// @code
-// ExceptionBarrierBase::set_crash_handling(true)
-// @endcode
-//
-// somewhere in your initialization code.
-//
-// Then, to use this class, simply instantiate an ExceptionBarrier just inside
-// the code boundary, like this:
-// @code
-// HRESULT SomeObject::SomeCOMMethod(...) {
-//   ExceptionBarrier report_crashes;
-//
-//   ... other code here ...
-// }
-// @endcode
-//
-// There are three ExceptionBarrier types defined here:
-//  1) ExceptionBarrier which reports all crashes it sees.
-//  2) ExceptionBarrierReportOnlyModule which reports only crashes occurring
-//     in this module.
-//  3) ExceptionBarrierCustomHandler which calls the handler set by a call
-//     to ExceptionBarrierCallCustomHandler::set_custom_handler(). Note that
-//     there is one custom handler for all ExceptionBarrierCallCustomHandler
-//     instances. If set_custom_handler() is never called, this places an
-//     SEH in the chain that just returns ExceptionContinueSearch.
-
-#ifndef CHROME_FRAME_EXCEPTION_BARRIER_H_
-#define CHROME_FRAME_EXCEPTION_BARRIER_H_
-
-#include <windows.h>
-
-extern "C" IMAGE_DOS_HEADER __ImageBase;
-
-// This is the type dictated for an exception handler by the platform ABI
-// @see _except_handler in excpt.h
-typedef EXCEPTION_DISPOSITION (__cdecl* ExceptionHandlerFunc)(
-                                struct _EXCEPTION_RECORD* exception_record,
-                                void*  establisher_frame,
-                                struct _CONTEXT* context,
-                                void*  reserved);
-
-// The type of an exception record in the exception handler chain
-struct EXCEPTION_REGISTRATION {
-  EXCEPTION_REGISTRATION* prev;
-  ExceptionHandlerFunc  handler;
-};
-
-// This is our raw exception handler, it must be declared extern "C" to
-// match up with the SAFESEH declaration in our corresponding ASM file.
-extern "C" EXCEPTION_DISPOSITION __cdecl
-ExceptionBarrierHandler(struct _EXCEPTION_RECORD* exception_record,
-                        void* establisher_frame,
-                        struct _CONTEXT* context,
-                        void* reserved);
-
-// An alternate raw exception handler that reports crashes only for the current
-// module. It must be declared extern "C" to match up with the SAFESEH
-// declaration in our corresponding ASM file.
-extern "C" EXCEPTION_DISPOSITION __cdecl
-ExceptionBarrierReportOnlyModuleHandler(
-    struct _EXCEPTION_RECORD* exception_record,
-    void* establisher_frame,
-    struct _CONTEXT* context,
-    void* reserved);
-
-// An alternate raw exception handler that calls out to a custom handler.
-// It must be declared extern "C" to match up with the SAFESEH declaration in
-// our corresponding ASM file.
-extern "C" EXCEPTION_DISPOSITION __cdecl
-ExceptionBarrierCallCustomHandler(
-    struct _EXCEPTION_RECORD* exception_record,
-    void* establisher_frame,
-    struct _CONTEXT* context,
-    void* reserved);
-
-
-// @name These are implemented in the associated .asm file
-// @{
-extern "C" void WINAPI RegisterExceptionRecord(
-                          EXCEPTION_REGISTRATION* registration,
-                          ExceptionHandlerFunc func);
-extern "C" void WINAPI UnregisterExceptionRecord(
-                          EXCEPTION_REGISTRATION* registration);
-// @}
-
-
-// Traits classes for ExceptionBarrierT.
-class EBTraitsBase {
- public:
-  static void UnregisterException(EXCEPTION_REGISTRATION* registration) {
-    UnregisterExceptionRecord(registration);
-  }
-};
-
-class EBReportAllTraits : public EBTraitsBase {
- public:
-  static void RegisterException(EXCEPTION_REGISTRATION* registration) {
-    RegisterExceptionRecord(registration, ExceptionBarrierHandler);
-  }
-};
-
-class EBReportOnlyThisModuleTraits : public EBTraitsBase {
- public:
-  static void RegisterException(EXCEPTION_REGISTRATION* registration) {
-    RegisterExceptionRecord(registration,
-                            ExceptionBarrierReportOnlyModuleHandler);
-  }
-};
-
-class EBCustomHandlerTraits : public EBTraitsBase {
- public:
-  static void RegisterException(EXCEPTION_REGISTRATION* registration) {
-    RegisterExceptionRecord(registration,
-                            ExceptionBarrierCallCustomHandler);
-  }
-};
-
-class ExceptionBarrierConfig {
- public:
-  // Used to globally enable or disable crash handling by ExceptionBarrierBase
-  // instances.
-  static void set_enabled(bool enabled) {
-    s_enabled_ = enabled;
-  }
-  static bool enabled() { return s_enabled_; }
-
-  // Whether crash reports are enabled.
-  static bool s_enabled_;
-};
-
-template <typename RegistrarTraits>
-class ExceptionBarrierT {
- public:
-  // Register the barrier in the SEH chain
-  ExceptionBarrierT() {
-    RegistrarTraits::RegisterException(&registration_);
-  }
-
-  // Unregister on destruction
-  virtual ~ExceptionBarrierT() {
-    RegistrarTraits::UnregisterException(&registration_);
-  }
-
- protected:
-  // Our SEH frame
-  EXCEPTION_REGISTRATION registration_;
-};
-
-// This class allows for setting a custom exception handler function. The
-// handler is shared among all instances. This class is intended to enable
-// testing of the SEH registration.
-template <typename RegistrarTraits>
-class ExceptionBarrierCustomHandlerT :
-    public ExceptionBarrierT<typename RegistrarTraits> {
- public:
-  // Signature of the handler function which gets notified when
-  // an exception propagates through a barrier.
-  typedef void (CALLBACK* CustomExceptionHandler)(EXCEPTION_POINTERS* ptrs);
-
-  // Used to set a global custom handler used by all
-  // ExceptionBarrierCustomHandler instances.
-  static void set_custom_handler(CustomExceptionHandler handler) {
-    s_custom_handler_ = handler;
-  }
-  static CustomExceptionHandler custom_handler() { return s_custom_handler_; }
-
- private:
-  static CustomExceptionHandler s_custom_handler_;
-};
-
-// Convenience typedefs for the ExceptionBarrierT specializations.
-typedef ExceptionBarrierT<EBReportAllTraits> ExceptionBarrier;
-typedef ExceptionBarrierT<EBReportOnlyThisModuleTraits>
-    ExceptionBarrierReportOnlyModule;
-typedef ExceptionBarrierCustomHandlerT<EBCustomHandlerTraits>
-    ExceptionBarrierCustomHandler;
-
-#endif  // CHROME_FRAME_EXCEPTION_BARRIER_H_