[cfe] Delay computation of primary constructor type parameters

This moves the computation of the synthesized type parameters on primary constructors from the fragment to the builder creation.

Change-Id: Ic11e3c20a53494084b75df5ad0456d7125d54223
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/398204
Reviewed-by: Jens Johansen <jensj@google.com>

https://dart.googlesource.com/sdk/+/d5cf7e2812d47475fcc216f008ca5e49bf4ebc68

DEPS

diff --git a/DEPS b/DEPS
index fd153c8..3233952 100644
--- a/DEPS
+++ b/DEPS
@@ -260,7 +260,7 @@
 
   'engine/src/flutter': Var('flutter_git') + '/mirrors/engine' + '@' + '1f6312df6d75cdfc72f47cc79acf8d2adb86c922',
 
-  'engine/src/flutter/third_party/dart': Var('dart_git') + '/sdk' + '@' + 'c1789388b060148282924b58d109cf85950a9a07',
+  'engine/src/flutter/third_party/dart': Var('dart_git') + '/sdk' + '@' + 'd5cf7e2812d47475fcc216f008ca5e49bf4ebc68',
 
   'flutter': Var('flutter_git') + '/mirrors/flutter' + '@' + 'a0ba2decab156c88708c4261d40660ab8f60da5f',
 

commits.json

diff --git a/commits.json b/commits.json
index 3bc3714..f39fdcb 100644
--- a/commits.json
+++ b/commits.json
@@ -1,5 +1,5 @@
 {
   "engine/src/flutter":"1f6312df6d75cdfc72f47cc79acf8d2adb86c922",
-  "engine/src/flutter/third_party/dart":"c1789388b060148282924b58d109cf85950a9a07",
+  "engine/src/flutter/third_party/dart":"d5cf7e2812d47475fcc216f008ca5e49bf4ebc68",
   "flutter":"a0ba2decab156c88708c4261d40660ab8f60da5f"
 }
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