Revert "Implement cumulative timings for CompilerDriver."

This reverts commit df013175d1aa04641e5c6175f8c786e547d31654.
diff --git a/compiler/dex/frontend.cc b/compiler/dex/frontend.cc
index 364a8bc..f5bb85a 100644
--- a/compiler/dex/frontend.cc
+++ b/compiler/dex/frontend.cc
@@ -141,25 +141,24 @@
 CompilationUnit::~CompilationUnit() {
 }
 
+// TODO: Add a cumulative version of logging, and combine with dex2oat --dump-timing
 void CompilationUnit::StartTimingSplit(const char* label) {
-  if (compiler_driver->GetDumpPasses()) {
+  if (enable_debug & (1 << kDebugTimings)) {
     timings.StartSplit(label);
   }
 }
 
 void CompilationUnit::NewTimingSplit(const char* label) {
-  if (compiler_driver->GetDumpPasses()) {
+  if (enable_debug & (1 << kDebugTimings)) {
     timings.NewSplit(label);
   }
 }
 
 void CompilationUnit::EndTiming() {
-  if (compiler_driver->GetDumpPasses()) {
+  if (enable_debug & (1 << kDebugTimings)) {
     timings.EndSplit();
-    if (enable_debug & (1 << kDebugTimings)) {
-      LOG(INFO) << "TIMINGS " << PrettyMethod(method_idx, *dex_file);
-      LOG(INFO) << Dumpable<TimingLogger>(timings);
-    }
+    LOG(INFO) << "TIMINGS " << PrettyMethod(method_idx, *dex_file);
+    LOG(INFO) << Dumpable<TimingLogger>(timings);
   }
 }
 
@@ -317,9 +316,6 @@
   }
 
   cu.EndTiming();
-  compiler.GetTimingsLogger().Start();
-  compiler.GetTimingsLogger().AddLogger(cu.timings);
-  compiler.GetTimingsLogger().End();
   return result;
 }
 
diff --git a/compiler/driver/compiler_driver.cc b/compiler/driver/compiler_driver.cc
index 714dc4c..5edc8b6 100644
--- a/compiler/driver/compiler_driver.cc
+++ b/compiler/driver/compiler_driver.cc
@@ -341,7 +341,7 @@
                                CompilerBackend compiler_backend, InstructionSet instruction_set,
                                InstructionSetFeatures instruction_set_features,
                                bool image, DescriptorSet* image_classes, size_t thread_count,
-                               bool dump_stats, bool dump_passes, CumulativeLogger* timer)
+                               bool dump_stats)
     : verified_methods_data_(verified_methods_data),
       method_inliner_map_(method_inliner_map),
       compiler_backend_(compiler_backend),
@@ -356,8 +356,6 @@
       start_ns_(0),
       stats_(new AOTCompilationStats),
       dump_stats_(dump_stats),
-      dump_passes_(dump_passes),
-      timings_logger_(timer),
       compiler_library_(NULL),
       compiler_(NULL),
       compiler_context_(NULL),
diff --git a/compiler/driver/compiler_driver.h b/compiler/driver/compiler_driver.h
index aabdf2f..9e31624 100644
--- a/compiler/driver/compiler_driver.h
+++ b/compiler/driver/compiler_driver.h
@@ -22,7 +22,6 @@
 #include <vector>
 
 #include "base/mutex.h"
-#include "base/timing_logger.h"
 #include "class_reference.h"
 #include "compiled_class.h"
 #include "compiled_method.h"
@@ -98,8 +97,7 @@
                           CompilerBackend compiler_backend, InstructionSet instruction_set,
                           InstructionSetFeatures instruction_set_features,
                           bool image, DescriptorSet* image_classes,
-                          size_t thread_count, bool dump_stats, bool dump_passes,
-                          CumulativeLogger* timer);
+                          size_t thread_count, bool dump_stats);
 
   ~CompilerDriver();
 
@@ -269,14 +267,6 @@
     return thread_count_;
   }
 
-  bool GetDumpPasses() const {
-    return dump_passes_;
-  }
-
-  CumulativeLogger& GetTimingsLogger() const {
-    return *timings_logger_;
-  }
-
   class PatchInformation {
    public:
     const DexFile& GetDexFile() const {
@@ -446,9 +436,6 @@
   UniquePtr<AOTCompilationStats> stats_;
 
   bool dump_stats_;
-  const bool dump_passes_;
-
-  CumulativeLogger* const timings_logger_;
 
   typedef void (*CompilerCallbackFn)(CompilerDriver& driver);
   typedef MutexLock* (*CompilerMutexLockFn)(CompilerDriver& driver);
diff --git a/compiler/oat_test.cc b/compiler/oat_test.cc
index 12d8212..2434262 100644
--- a/compiler/oat_test.cc
+++ b/compiler/oat_test.cc
@@ -82,11 +82,10 @@
   verified_methods_data_.reset(new VerifiedMethodsData);
   method_inliner_map_.reset(compiler_backend == kQuick ? new DexFileToMethodInlinerMap : nullptr);
   callbacks_.Reset(verified_methods_data_.get(), method_inliner_map_.get());
-  CumulativeLogger timer("Compilation times");
   compiler_driver_.reset(new CompilerDriver(verified_methods_data_.get(),
                                             method_inliner_map_.get(),
                                             compiler_backend, insn_set,
-                                            insn_features, false, NULL, 2, true, true, &timer));
+                                            insn_features, false, NULL, 2, true));
   jobject class_loader = NULL;
   if (kCompile) {
     TimingLogger timings("OatTest::WriteRead", false, false);