Move Hydrogen and Lithium to src/crankshaft/

src/isolate.cc

Index: src/isolate.cc
diff --git a/src/isolate.cc b/src/isolate.cc
index efa2822b4ccbab190593b76f85c577edb78df6e2..95a53cb0b705aa98d71ea2b5b6383d1b09736777 100644
--- a/src/isolate.cc
+++ b/src/isolate.cc
@@ -18,14 +18,13 @@
 #include "src/codegen.h"
 #include "src/compilation-cache.h"
 #include "src/compilation-statistics.h"
+#include "src/crankshaft/hydrogen.h"  // For HStatistics and HTracer.

[Michael Starzinger, 2015/10/19 17:50:07]

nit: I am not a huge fan of the comments after includes. They tend to get out of
date and don't add much value IMHO. Would you be fine with dropping it?

[Jakob Kummerow, 2015/10/20 12:10:48]

Done. (I agree in general; the motivation for adding this comment was that I
found it surprising that the #include was required, so it seemed worthwhile to
document the reason.)

 #include "src/debug/debug.h"
 #include "src/deoptimizer.h"
 #include "src/frames-inl.h"
-#include "src/hydrogen.h"
 #include "src/ic/stub-cache.h"
 #include "src/interpreter/interpreter.h"
 #include "src/isolate-inl.h"
-#include "src/lithium-allocator.h"
 #include "src/log.h"
 #include "src/messages.h"
 #include "src/profiler/cpu-profiler.h"