4 files changed, 3 insertions, 51 deletions
diff --git a/ipc/app/plugin-container.exe.manifest b/ipc/app/plugin-container.exe.manifest
index d61ddec1a..303109523 100644
--- a/ipc/app/plugin-container.exe.manifest
+++ b/ipc/app/plugin-container.exe.manifest
@@ -37,7 +37,6 @@
       <supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}"/>
       <supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}"/>
       <supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}"/>
-      <supportedOS Id="{e2011457-1546-43c5-a5fe-008deee3d3f0}"/>
     </application>
   </compatibility>
 </assembly>
diff --git a/ipc/chromium/src/base/process_util_win.cc b/ipc/chromium/src/base/process_util_win.cc
index 12fbc23a5..f22f7216f 100644
--- a/ipc/chromium/src/base/process_util_win.cc
+++ b/ipc/chromium/src/base/process_util_win.cc
@@ -297,43 +297,6 @@ bool LaunchApp(const std::wstring& cmdline,
   startup_info.wShowWindow = start_hidden ? SW_HIDE : SW_SHOW;
 
   LPPROC_THREAD_ATTRIBUTE_LIST lpAttributeList = NULL;
-  // Don't even bother trying pre-Vista...
-  if (mozilla::IsVistaOrLater()) {
-    // setup our handle array first - if we end up with no handles that can
-    // be inherited we can avoid trying to do the ThreadAttributeList dance...
-    HANDLE handlesToInherit[2];
-    int handleCount = 0;
-    HANDLE stdOut = ::GetStdHandle(STD_OUTPUT_HANDLE);
-    HANDLE stdErr = ::GetStdHandle(STD_ERROR_HANDLE);
-
-    if (IsInheritableHandle(stdOut))
-      handlesToInherit[handleCount++] = stdOut;
-    if (stdErr != stdOut && IsInheritableHandle(stdErr))
-      handlesToInherit[handleCount++] = stdErr;
-
-    if (handleCount) {
-      lpAttributeList = CreateThreadAttributeList(handlesToInherit, handleCount);
-      if (lpAttributeList) {
-        // it's safe to inherit handles, so arrange for that...
-        startup_info.cb = sizeof(startup_info_ex);
-        startup_info.dwFlags |= STARTF_USESTDHANDLES;
-        startup_info.hStdOutput = stdOut;
-        startup_info.hStdError = stdErr;
-        startup_info.hStdInput = INVALID_HANDLE_VALUE;
-        startup_info_ex.lpAttributeList = lpAttributeList;
-        dwCreationFlags |= EXTENDED_STARTUPINFO_PRESENT;
-        bInheritHandles = TRUE;
-      }
-    }
-  } else if (PR_GetEnv("MOZ_WIN_INHERIT_STD_HANDLES_PRE_VISTA")) {
-    // Even if we can't limit what gets inherited, we sometimes want to inherit
-    // stdout/err for testing purposes.
-    startup_info.dwFlags |= STARTF_USESTDHANDLES;
-    startup_info.hStdOutput = ::GetStdHandle(STD_OUTPUT_HANDLE);
-    startup_info.hStdError = ::GetStdHandle(STD_ERROR_HANDLE);
-    startup_info.hStdInput = INVALID_HANDLE_VALUE;
-    bInheritHandles = TRUE;
-  }
 
   PROCESS_INFORMATION process_info;
   BOOL createdOK = CreateProcess(NULL,
diff --git a/ipc/glue/WindowsMessageLoop.cpp b/ipc/glue/WindowsMessageLoop.cpp
index 8057ee25d..8f3471efc 100644
--- a/ipc/glue/WindowsMessageLoop.cpp
+++ b/ipc/glue/WindowsMessageLoop.cpp
@@ -1034,7 +1034,7 @@ MessageChannel::WaitForSyncNotify(bool aHandleWindowsMessages)
   MOZ_ASSERT(gUIThreadId, "InitUIThread was not called!");
 
 #if defined(ACCESSIBILITY)
-  if (IsVistaOrLater() && (mFlags & REQUIRE_A11Y_REENTRY)) {
+  if (mFlags & REQUIRE_A11Y_REENTRY) {
     MOZ_ASSERT(!(mFlags & REQUIRE_DEFERRED_MESSAGE_PROTECTION));
     return WaitForSyncNotifyWithA11yReentry();
   }
diff --git a/ipc/mscom/MainThreadRuntime.cpp b/ipc/mscom/MainThreadRuntime.cpp
index d86317966..a061eaf54 100644
--- a/ipc/mscom/MainThreadRuntime.cpp
+++ b/ipc/mscom/MainThreadRuntime.cpp
@@ -44,13 +44,6 @@ MainThreadRuntime::MainThreadRuntime()
     return;
   }
 
-  // Windows XP doesn't support setting of the COM exception policy, so we'll
-  // just stop here in that case.
-  if (!IsVistaOrLater()) {
-    mInitResult = S_OK;
-    return;
-  }
-
   // We are required to initialize security in order to configure global options.
   mInitResult = InitializeSecurity();
   MOZ_ASSERT(SUCCEEDED(mInitResult));
@@ -67,11 +60,8 @@ MainThreadRuntime::MainThreadRuntime()
     return;
   }
 
-  // Windows 7 has a policy that is even more strict. We should use that one
-  // whenever possible.
-  ULONG_PTR exceptionSetting = IsWin7OrLater() ?
-                               COMGLB_EXCEPTION_DONOT_HANDLE_ANY :
-                               COMGLB_EXCEPTION_DONOT_HANDLE;
+  // Use the strictest policy available.
+  ULONG_PTR exceptionSetting = COMGLB_EXCEPTION_DONOT_HANDLE_ANY;
   mInitResult = globalOpts->Set(COMGLB_EXCEPTION_HANDLING, exceptionSetting);
   MOZ_ASSERT(SUCCEEDED(mInitResult));
 }