Roll ICU DEPS for https://codereview.chromium.org/11826015/

TBR=jshin

BUG=165264

Review URL: https://codereview.chromium.org/11820055

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@176140 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -75,7 +75,7 @@ deps = {
     "/trunk/deps/third_party/WebKit@76115",
 
   "src/third_party/icu":
-    "/trunk/deps/third_party/icu46@175290",
+    "/trunk/deps/third_party/icu46@176115",
 
   "src/third_party/libexif/sources":
     "/trunk/deps/third_party/libexif/sources@146817",