GN: Remove all_blink target on android builds, it does not work yet

TBR=brettw@chromium.org

Review URL: https://codereview.chromium.org/325053002

git-svn-id: svn://svn.chromium.org/blink/trunk@175920 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/public/BUILD.gn

@@ -2,6 +2,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+if (!is_android) {
+
 group("all_blink") {
   deps = [
     "//third_party/WebKit/Source/core",
@@ -10,6 +12,8 @@ group("all_blink") {
   ]
 }
 
+}
+
 config("blink_headers_config") {
   include_dirs = [ ".." ]
 }