gcapi: update install script path

This changed during the bundle restructure but gcapi was never
updated to match.

Bug: 958976
Change-Id: I1a1e50823d454ba807fc352373909fdb395a8a30
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1888110Reviewed-by: Mark Mentovai <mark@chromium.org>
Commit-Queue: Elly Fong-Jones <ellyjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#710465}

chrome/installer/gcapi_mac/gcapi.mm

@@ -291,10 +291,10 @@ NSString* PathToFramework(NSString* app_path, NSDictionary* info_plist) {
   NSString* version = [info_plist objectForKey:@"CFBundleShortVersionString"];
   if (!version)
     return nil;
-  return [[[app_path
-      stringByAppendingPathComponent:@"Contents/Versions"]
-      stringByAppendingPathComponent:version]
-      stringByAppendingPathComponent:@"Google Chrome Framework.framework"];
+  return [NSString pathWithComponents:@[
+    app_path, @"Contents", @"Frameworks", @"Google Chrome Framework.framework",
+    @"Versions", version
+  ]];
 }
 
 NSString* PathToInstallScript(NSString* app_path, NSDictionary* info_plist) {