Refactor compiler tests around CompilerDriver.

Introduce CommonCompilerDriverTest and inherit that in tests
that need to use CompilerDriver. This is in preparation for
moving the CompilerDriver to dex2oat/.

Test: m test-art-host-gtest
Change-Id: I46cf0bc1df4327569eef5526eeab0781473173a1
diff --git a/compiler/driver/compiler_driver.cc b/compiler/driver/compiler_driver.cc
index 1c9830b..3be5627 100644
--- a/compiler/driver/compiler_driver.cc
+++ b/compiler/driver/compiler_driver.cc
@@ -643,55 +643,6 @@
                        quick_fn);
 }
 
-// Compile a single Method. (For testing only.)
-void CompilerDriver::CompileOne(Thread* self,
-                                jobject class_loader,
-                                const DexFile& dex_file,
-                                uint16_t class_def_idx,
-                                uint32_t method_idx,
-                                uint32_t access_flags,
-                                InvokeType invoke_type,
-                                const dex::CodeItem* code_item,
-                                Handle<mirror::DexCache> dex_cache,
-                                Handle<mirror::ClassLoader> h_class_loader) {
-  // Can we run DEX-to-DEX compiler on this class ?
-  optimizer::DexToDexCompiler::CompilationLevel dex_to_dex_compilation_level =
-      GetDexToDexCompilationLevel(self,
-                                  *this,
-                                  class_loader,
-                                  dex_file,
-                                  dex_file.GetClassDef(class_def_idx));
-
-  CompileMethodQuick(self,
-                     this,
-                     code_item,
-                     access_flags,
-                     invoke_type,
-                     class_def_idx,
-                     method_idx,
-                     h_class_loader,
-                     dex_file,
-                     dex_to_dex_compilation_level,
-                     dex_cache);
-
-  const size_t num_methods = dex_to_dex_compiler_.NumCodeItemsToQuicken(self);
-  if (num_methods != 0) {
-    DCHECK_EQ(num_methods, 1u);
-    CompileMethodDex2Dex(self,
-                         this,
-                         code_item,
-                         access_flags,
-                         invoke_type,
-                         class_def_idx,
-                         method_idx,
-                         h_class_loader,
-                         dex_file,
-                         dex_to_dex_compilation_level,
-                         dex_cache);
-    dex_to_dex_compiler_.ClearState();
-  }
-}
-
 void CompilerDriver::Resolve(jobject class_loader,
                              const std::vector<const DexFile*>& dex_files,
                              TimingLogger* timings) {
@@ -903,7 +854,7 @@
     // Avoid adding the dex files in the case where we aren't going to add compiled methods.
     // This reduces RAM usage for this case.
     for (const DexFile* dex_file : dex_files) {
-      // Can be already inserted if the caller is CompileOne. This happens for gtests.
+      // Can be already inserted. This happens for gtests.
       if (!compiled_methods_.HaveDexFile(dex_file)) {
         compiled_methods_.AddDexFile(dex_file);
       }