Remove mirror:: and ArtMethod deps in utils.{h,cc}

The latest chapter in the ongoing saga of attempting to dump a DEX
file without having to start a whole runtime instance.  This episode
finds us removing references to ArtMethod/ArtField/mirror.

One aspect of this change that I would like to call out specfically
is that the utils versions of the "Pretty*" functions all were written
to accept nullptr as an argument.  I have split these functions up as
follows:
1) an instance method, such as PrettyClass that obviously requires
this != nullptr.
2) a static method, that behaves the same way as the util method, but
calls the instance method if p != nullptr.
This requires using a full class qualifier for the static methods,
which isn't exactly beautiful.  I have tried to remove as many cases
as possible where it was clear p != nullptr.

Bug: 22322814
Test: test-art-host
Change-Id: I21adee3614aa697aa580cd1b86b72d9206e1cb24
diff --git a/runtime/dex_file_annotations.cc b/runtime/dex_file_annotations.cc
index e538334..0765465 100644
--- a/runtime/dex_file_annotations.cc
+++ b/runtime/dex_file_annotations.cc
@@ -247,8 +247,7 @@
   Handle<mirror::Class> annotation_class(hs.NewHandle(
       class_linker->ResolveType(klass->GetDexFile(), type_index, klass.Get())));
   if (annotation_class.Get() == nullptr) {
-    LOG(INFO) << "Unable to resolve " << PrettyClass(klass.Get()) << " annotation class "
-              << type_index;
+    LOG(INFO) << "Unable to resolve " << klass->PrettyClass() << " annotation class " << type_index;
     DCHECK(Thread::Current()->IsExceptionPending());
     Thread::Current()->ClearException();
     return nullptr;
@@ -1316,7 +1315,7 @@
   }
 
   const DexFile::CodeItem* code_item = dex_file->GetCodeItem(method->GetCodeItemOffset());
-  DCHECK(code_item != nullptr) << PrettyMethod(method) << " " << dex_file->GetLocation();
+  DCHECK(code_item != nullptr) << method->PrettyMethod() << " " << dex_file->GetLocation();
 
   // A method with no line number info should return -1
   DexFile::LineNumFromPcContext context(rel_pc, -1);