ICU upgrade to 54.1 step 2

source/common/unicode/utypes.h

Index: source/common/unicode/utypes.h
diff --git a/source/common/unicode/utypes.h b/source/common/unicode/utypes.h
index 704089c77bc4065be3e7595b571a688ccba44be8..18246259b86d7a6b88e2c77cc466974026c03d92 100644
--- a/source/common/unicode/utypes.h
+++ b/source/common/unicode/utypes.h
@@ -305,7 +305,7 @@ typedef double UDate;
 #define U_IO_API
 #define U_TOOLUTIL_API
 #elif defined(U_COMMON_IMPLEMENTATION)
-#define U_DATA_API     U_IMPORT
+#define U_DATA_API     U_EXPORT

[Mark Mentovai, 2015/01/09 22:17:39]

Double-check this. Have they made it so that data is always part of the common
library now?

[jungshik at Google, 2015/01/09 23:33:22]

It's done for this bug :
https://code.google.com/p/chromium/issues/detail?id=325982, but it's not likely
to be relevant any more because we don't use 'icudt.dll' any more (although it's
supported, it's not used by default and none of our bots/release builds uses
it). 

wfh@ has the following analysis : 

---------
I think this is because of a clash in the __declspec(dllimport) udata.cc
declaration of the icudt46.dat import on line 613:

https://code.google.com/p/chromium/codesearch#chromium/src/third_party/icu/so...

and the declaration in the .dll that's built and checked in
icu/windows/icudt.dll
-----------

We may as well drop the patch.

 #define U_COMMON_API   U_EXPORT
 #define U_I18N_API     U_IMPORT
 #define U_LAYOUT_API   U_IMPORT
@@ -647,6 +647,7 @@ typedef enum UErrorCode {
     U_REGEX_STACK_OVERFLOW,               /**< Regular expression backtrack stack overflow.       */
     U_REGEX_TIME_OUT,                     /**< Maximum allowed match time exceeded                */
     U_REGEX_STOPPED_BY_CALLER,            /**< Matching operation aborted by user callback fn.    */
+    U_REGEX_PATTERN_TOO_BIG,              /**< Pattern exceeds limits on size or complexity.   @draft ICU 55   */
     U_REGEX_ERROR_LIMIT,                  /**< This must always be the last value to indicate the limit for regexp errors */
 
     /*