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/compiler/optimizing/builder.cc b/compiler/optimizing/builder.cc
index 86742e6..2927e1f 100644
--- a/compiler/optimizing/builder.cc
+++ b/compiler/optimizing/builder.cc
@@ -51,7 +51,7 @@
 
   if (compiler_options.IsHugeMethod(code_item_.insns_size_in_code_units_)) {
     VLOG(compiler) << "Skip compilation of huge method "
-                   << PrettyMethod(dex_compilation_unit_->GetDexMethodIndex(), *dex_file_)
+                   << dex_file_->PrettyMethod(dex_compilation_unit_->GetDexMethodIndex())
                    << ": " << code_item_.insns_size_in_code_units_ << " code units";
     MaybeRecordStat(MethodCompilationStat::kNotCompiledHugeMethod);
     return true;
@@ -61,7 +61,7 @@
   if (compiler_options.IsLargeMethod(code_item_.insns_size_in_code_units_)
       && (number_of_branches == 0)) {
     VLOG(compiler) << "Skip compilation of large method with no branch "
-                   << PrettyMethod(dex_compilation_unit_->GetDexMethodIndex(), *dex_file_)
+                   << dex_file_->PrettyMethod(dex_compilation_unit_->GetDexMethodIndex())
                    << ": " << code_item_.insns_size_in_code_units_ << " code units";
     MaybeRecordStat(MethodCompilationStat::kNotCompiledLargeMethodNoBranches);
     return true;