icu: Add defines for Fuchsia

patches/fuchsia.patch

Index: patches/fuchsia.patch
diff --git a/patches/fuchsia.patch b/patches/fuchsia.patch
new file mode 100644
index 0000000000000000000000000000000000000000..dc3f86be1eac08c02360869bda365c00bb3ced13
--- /dev/null
+++ b/patches/fuchsia.patch
@@ -0,0 +1,22 @@
+diff --git a/source/common/unicode/platform.h b/source/common/unicode/platform.h
+index 057182d..5e46903 100644
+--- a/source/common/unicode/platform.h
++++ b/source/common/unicode/platform.h
+@@ -132,6 +132,8 @@
+ #define U_PF_BROWSER_NATIVE_CLIENT 4020
+ /** Android is based on Linux. @internal */
+ #define U_PF_ANDROID 4050
++/** Fuchsia is a POSIX-ish platform. @internal */

[jungshik at Google, 2017/05/18 00:19:35]

Glad to know that. :-) 
I was wondering about Fuchsia and ICU for a while, but haven't managed to
contact the team. (I was worried that a lot more extensive changes might be
necessary for fuchsia. ) 

Thanks for the CL. 

++#define U_PF_FUCHSIA 4100
+ /* Maximum value for Linux-based platform is 4499 */
+ /** z/OS is the successor to OS/390 which was the successor to MVS. @internal */
+ #define U_PF_OS390 9000
+@@ -152,6 +154,8 @@
+ #   include <android/api-level.h>
+ #elif defined(__pnacl__) || defined(__native_client__)
+ #   define U_PLATFORM U_PF_BROWSER_NATIVE_CLIENT
++#elif defined(__Fuchsia__)
++#   define U_PLATFORM U_PF_FUCHSIA
+ #elif defined(linux) || defined(__linux__) || defined(__linux)
+ #   define U_PLATFORM U_PF_LINUX
+ #elif defined(__APPLE__) && defined(__MACH__)