Implement IsAsciiUpper and IsAsciiLower in base/strings/string_util.h

content/renderer/pepper/event_conversion.cc

 // 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 "content/renderer/pepper/event_conversion.h"
 
 #include <stddef.h>
 #include <stdint.h>
 #include <string.h>
 
@@ skipping 515 matching lines @@
       std::string functionKeyName = base::StringPrintf("F%d", i);
       if (functionKeyName == char_text) {
         vk_code = VK_F1 + (i - 1);
         break;
       }
     }
     if (!vk_code) {
       base::string16 char_text16 = base::UTF8ToUTF16(char_text);
       DCHECK_EQ(char_text16.size(), 1U);
       vk_text = vk_code = char_text16[0];
-      *needs_shift_modifier =
-          (vk_code & 0xFF) >= 'A' && (vk_code & 0xFF) <= 'Z';
-      if ((vk_code & 0xFF) >= 'a' && (vk_code & 0xFF) <= 'z')
+      *needs_shift_modifier = base::IsAsciiUpper(vk_code & 0xFF);
+      if (base::IsAsciiLower(vk_code & 0xFF))
         vk_code -= 'a' - 'A';
       *generate_char = true;
     }
   }
 
   *code = vk_code;
   *text = vk_text;
 }
 
 }  // namespace
@@ skipping 195 matching lines @@
     case WebInputEvent::TouchStart:
       return PP_INPUTEVENT_CLASS_TOUCH;
     case WebInputEvent::Undefined:
     default:
       CHECK(WebInputEvent::isGestureEventType(type));
       return PP_InputEvent_Class(0);
   }
 }
 
 }  // namespace content