From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Cheng Zhao <zcbenz@gmail.com>
Date: Thu, 4 Oct 2018 14:57:02 -0700
Subject: accelerator.patch

This patch makes three changes to Accelerator::GetShortcutText to improve shortcut display text in menus:

1. Ctrl-Alt-<Key> accelerators show as Ctrl-Alt-<Key> instead of as Ctrl-<Key>
2. F2-F24 accelerators show up as such
3. Ctrl-Shift-= should show as Ctrl-+


diff --git a/ui/base/accelerators/accelerator.cc b/ui/base/accelerators/accelerator.cc
index bf214d0b04ea5cf6711cd50618ad843bd054e538..7f245b1e8b9b3c5dc6666be4d74b69c86e80a351 100644
--- a/ui/base/accelerators/accelerator.cc
+++ b/ui/base/accelerators/accelerator.cc
@@ -11,6 +11,7 @@
 #include "base/logging.h"
 #include "base/strings/strcat.h"
 #include "base/strings/string_util.h"
+#include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "build/build_config.h"
 #include "ui/base/l10n/l10n_util.h"
@@ -22,9 +23,7 @@
 #include <windows.h>
 #endif
 
-#if !defined(OS_WIN) && (defined(USE_AURA) || defined(OS_MACOSX))
 #include "ui/events/keycodes/keyboard_code_conversion.h"
-#endif
 
 namespace ui {
 
@@ -148,7 +147,15 @@ base::string16 Accelerator::GetShortcutText() const {
   shortcut = KeyCodeToName(key_code_);
 #endif
 
+  unsigned int flags = 0;
   if (shortcut.empty()) {
+    const uint16_t c = DomCodeToUsLayoutCharacter(
+        UsLayoutKeyboardCodeToDomCode(key_code_), flags);
+    if (c != 0) {
+      shortcut =
+          static_cast<base::string16::value_type>(
+              base::ToUpperASCII(static_cast<base::char16>(c)));
+    }
 #if defined(OS_WIN)
     // Our fallback is to try translate the key code to a regular character
     // unless it is one of digits (VK_0 to VK_9). Some keyboard
@@ -157,18 +164,14 @@ base::string16 Accelerator::GetShortcutText() const {
     // accent' for '0'). For display in the menu (e.g. Ctrl-0 for the
     // default zoom level), we leave VK_[0-9] alone without translation.
     wchar_t key;
-    if (base::IsAsciiDigit(key_code_))
+    if (base::IsAsciiDigit(key_code_)) {
       key = static_cast<wchar_t>(key_code_);
-    else
-      key = LOWORD(::MapVirtualKeyW(key_code_, MAPVK_VK_TO_CHAR));
-    shortcut += key;
-#elif defined(USE_AURA) || defined(OS_MACOSX) || defined(OS_ANDROID)
-    const uint16_t c = DomCodeToUsLayoutCharacter(
-        UsLayoutKeyboardCodeToDomCode(key_code_), false);
-    if (c != 0)
-      shortcut +=
-          static_cast<base::string16::value_type>(base::ToUpperASCII(c));
+      shortcut = key;
+    }
 #endif
+    if (key_code_ > VKEY_F1 && key_code_ <= VKEY_F24)
+      shortcut = base::UTF8ToUTF16(
+          base::StringPrintf("F%d", key_code_ - VKEY_F1 + 1));
   }
 
   // Checking whether the character used for the accelerator is alphanumeric.
@@ -232,7 +235,7 @@ base::string16 Accelerator::ApplyLongFormModifiers(
   // more information.
   if (IsCtrlDown())
     shortcut = ApplyModifierToAcceleratorString(shortcut, IDS_APP_CTRL_KEY);
-  else if (IsAltDown())
+  if (IsAltDown())
     shortcut = ApplyModifierToAcceleratorString(shortcut, IDS_APP_ALT_KEY);
 
   if (IsCmdDown()) {