Incremental tuning/cleanup of inlining: --print-inline-tree changed to --print-inlining-tree.

runtime/vm/compiler.cc

Index: runtime/vm/compiler.cc
===================================================================
--- runtime/vm/compiler.cc	(revision 34449)
+++ runtime/vm/compiler.cc	(working copy)
@@ -515,6 +515,10 @@
           sinking->DetachMaterializations();
         }
 
+        // Compute and store graph informations (call & instruction counts)
+        // to be later used by the inliner.
+        FlowGraphInliner::CollectGraphInfo(flow_graph, true);
+
         // Perform register allocation on the SSA graph.
         FlowGraphAllocator allocator(*flow_graph);
         allocator.AllocateRegisters();