[ios] Remove ios_sdk_platform_abs_path gn variable

The variable ios_sdk_platform_abs_path is always set to the value
of ios_sdk_platform_path. There is no need for two variables with
the same value, remove the less used one.

Bug: 1015730
Change-Id: Ie4903ff9e857be8032770c9732db105fe49829c0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2505812
Commit-Queue: Sylvain Defresne <sdefresne@chromium.org>
Commit-Queue: Justin Cohen <justincohen@chromium.org>
Auto-Submit: Sylvain Defresne <sdefresne@chromium.org>
Reviewed-by: Justin Cohen <justincohen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#821758}

build/config/ios/BUILD.gn

@@ -133,13 +133,12 @@ group("xctest") {
 }
 
 _xctrunner_path =
-    "$ios_sdk_platform_abs_path/Developer/Library/Xcode/Agents/XCTRunner.app"
+    "$ios_sdk_platform_path/Developer/Library/Xcode/Agents/XCTRunner.app"
 
-# When building with Goma RBE, $ios_sdk_platform_abs_path corresponds to a
-# symlink below $root_build_dir that points to the real SDK to use. Because
-# the files are below $root_build_dir, it is not possible to list them as a
-# target input without gn complaining (as it can't find a target creating
-# those files).
+# When building with Goma RBE, $ios_sdk_platform_path corresponds to a symlink
+# below $root_build_dir that points to the real SDK to use. Because the files
+# are below $root_build_dir, it is not possible to list them as a target input
+# without gn complaining (as it can't find a target creating those files).
 #
 # The symlinks are created by //build/config/mac/sdk_info.py script invoked
 # via exec_script() from //build/config/{ios/ios_sdk.gni,mac/mac_sdk.gni}.

build/config/ios/ios_sdk.gni

@@ -146,7 +146,6 @@ if (ios_sdk_path == "") {
   }
   script_name = "//build/config/mac/sdk_info.py"
   _ios_sdk_result = exec_script(script_name, ios_sdk_info_args, "scope")
-  ios_sdk_platform_abs_path = _ios_sdk_result.sdk_platform_path
   ios_sdk_path = _ios_sdk_result.sdk_path
   ios_sdk_platform_path = _ios_sdk_result.sdk_platform_path
   ios_sdk_version = _ios_sdk_result.sdk_version

build/config/ios/rules.gni

@@ -1938,7 +1938,7 @@ template("ios_xcuitest_test_runner_bundle") {
   }
 
   _xctrunner_path =
-      "$ios_sdk_platform_abs_path/Developer/Library/Xcode/Agents/XCTRunner.app"
+      "$ios_sdk_platform_path/Developer/Library/Xcode/Agents/XCTRunner.app"
 
   _info_plist_merge_plist = _target_name + "_info_plist_merge_plist"
   _info_plist_target = _target_name + "_info_plist"