Remove ArtCode.

- Instead use OatQuickMethodHeader.
- Various cleanups now that we don't have all those
  ArtMethod -> ArtCode -> OatQuickMethodHeader indirections.

As a consequence of this cleanup, exception handling got a bit
faster.

ParserCombinators benchmark (exception intensive) on x64: (lower is better)
Before:
ParserCombinators(RunTime): 1062500.0 us.
After:
ParserCombinators(RunTime): 833000.0 us.

Change-Id: Idac917b6f1b0dc254ad68fb3781cd61bccadb0f3
diff --git a/compiler/common_compiler_test.cc b/compiler/common_compiler_test.cc
index 1727657..58a2f96 100644
--- a/compiler/common_compiler_test.cc
+++ b/compiler/common_compiler_test.cc
@@ -32,6 +32,7 @@
 #include "mirror/class-inl.h"
 #include "mirror/dex_cache.h"
 #include "mirror/object-inl.h"
+#include "oat_quick_method_header.h"
 #include "scoped_thread_state_change.h"
 #include "thread-inl.h"
 #include "utils.h"
diff --git a/compiler/dex/quick/x86/assemble_x86.cc b/compiler/dex/quick/x86/assemble_x86.cc
index 64becb9..e5d3841 100644
--- a/compiler/dex/quick/x86/assemble_x86.cc
+++ b/compiler/dex/quick/x86/assemble_x86.cc
@@ -21,6 +21,7 @@
 #include "dex/compiler_ir.h"
 #include "dex/quick/mir_to_lir.h"
 #include "oat.h"
+#include "oat_quick_method_header.h"
 #include "utils.h"
 #include "x86_lir.h"
 
diff --git a/compiler/dex/quick/x86/target_x86.cc b/compiler/dex/quick/x86/target_x86.cc
index 25fb886..75f3fef 100755
--- a/compiler/dex/quick/x86/target_x86.cc
+++ b/compiler/dex/quick/x86/target_x86.cc
@@ -31,6 +31,7 @@
 #include "mirror/array-inl.h"
 #include "mirror/string.h"
 #include "oat.h"
+#include "oat_quick_method_header.h"
 #include "x86_lir.h"
 
 namespace art {
diff --git a/compiler/jit/jit_compiler.cc b/compiler/jit/jit_compiler.cc
index a45df95..fcbd483 100644
--- a/compiler/jit/jit_compiler.cc
+++ b/compiler/jit/jit_compiler.cc
@@ -30,6 +30,7 @@
 #include "jit/jit.h"
 #include "jit/jit_code_cache.h"
 #include "oat_file-inl.h"
+#include "oat_quick_method_header.h"
 #include "object_lock.h"
 #include "thread_list.h"
 #include "verifier/method_verifier-inl.h"
diff --git a/compiler/linker/arm/relative_patcher_arm_base.cc b/compiler/linker/arm/relative_patcher_arm_base.cc
index ceace82..cb9ea38 100644
--- a/compiler/linker/arm/relative_patcher_arm_base.cc
+++ b/compiler/linker/arm/relative_patcher_arm_base.cc
@@ -18,6 +18,7 @@
 
 #include "compiled_method.h"
 #include "oat.h"
+#include "oat_quick_method_header.h"
 #include "output_stream.h"
 
 namespace art {
diff --git a/compiler/linker/arm/relative_patcher_thumb2_test.cc b/compiler/linker/arm/relative_patcher_thumb2_test.cc
index 13f67e6..5515313 100644
--- a/compiler/linker/arm/relative_patcher_thumb2_test.cc
+++ b/compiler/linker/arm/relative_patcher_thumb2_test.cc
@@ -16,6 +16,7 @@
 
 #include "linker/relative_patcher_test.h"
 #include "linker/arm/relative_patcher_thumb2.h"
+#include "oat_quick_method_header.h"
 
 namespace art {
 namespace linker {
diff --git a/compiler/linker/arm64/relative_patcher_arm64.cc b/compiler/linker/arm64/relative_patcher_arm64.cc
index 6b9c530..6f234a8 100644
--- a/compiler/linker/arm64/relative_patcher_arm64.cc
+++ b/compiler/linker/arm64/relative_patcher_arm64.cc
@@ -22,6 +22,7 @@
 #include "driver/compiler_driver.h"
 #include "utils/arm64/assembler_arm64.h"
 #include "oat.h"
+#include "oat_quick_method_header.h"
 #include "output_stream.h"
 
 namespace art {
diff --git a/compiler/linker/arm64/relative_patcher_arm64_test.cc b/compiler/linker/arm64/relative_patcher_arm64_test.cc
index b3af4c6..857d584 100644
--- a/compiler/linker/arm64/relative_patcher_arm64_test.cc
+++ b/compiler/linker/arm64/relative_patcher_arm64_test.cc
@@ -16,6 +16,7 @@
 
 #include "linker/relative_patcher_test.h"
 #include "linker/arm64/relative_patcher_arm64.h"
+#include "oat_quick_method_header.h"
 
 namespace art {
 namespace linker {
diff --git a/compiler/linker/relative_patcher_test.h b/compiler/linker/relative_patcher_test.h
index 31d1bce..e357662 100644
--- a/compiler/linker/relative_patcher_test.h
+++ b/compiler/linker/relative_patcher_test.h
@@ -30,6 +30,7 @@
 #include "linker/relative_patcher.h"
 #include "method_reference.h"
 #include "oat.h"
+#include "oat_quick_method_header.h"
 #include "utils/array_ref.h"
 #include "vector_output_stream.h"
 
diff --git a/compiler/oat_writer.cc b/compiler/oat_writer.cc
index a78a5b3..640698b 100644
--- a/compiler/oat_writer.cc
+++ b/compiler/oat_writer.cc
@@ -39,6 +39,7 @@
 #include "mirror/class_loader.h"
 #include "mirror/dex_cache-inl.h"
 #include "mirror/object-inl.h"
+#include "oat_quick_method_header.h"
 #include "os.h"
 #include "output_stream.h"
 #include "safe_map.h"