Add "force inline" to internal annotations.

pkg/compiler/lib/src/ssa/builder.dart

Index: pkg/compiler/lib/src/ssa/builder.dart
diff --git a/pkg/compiler/lib/src/ssa/builder.dart b/pkg/compiler/lib/src/ssa/builder.dart
index 2db55a0c70b1310e079849862889e58a4507bbe1..31c2fddbf19cdf8c328fd5dc3de0e7dd5779d34d 100644
--- a/pkg/compiler/lib/src/ssa/builder.dart
+++ b/pkg/compiler/lib/src/ssa/builder.dart
@@ -1363,10 +1363,9 @@ class SsaBuilder extends ResolvedVisitor {
         return reductiveHeuristic();
       }
 
-      if (cachedCanBeInlined == true) return cachedCanBeInlined;
-
-      if (backend.functionsToAlwaysInline.contains(function)) {
-        // Inline this function regardless of it's size.
+      if (cachedCanBeInlined == true) {
+        // We may have forced the inlining of some methods. Therefore check
+        // if we can inline this method regardless of size.
         assert(InlineWeeder.canBeInlined(function, -1, false,
                                          allowLoops: true));
         return true;