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/instruction_builder.cc b/compiler/optimizing/instruction_builder.cc
index f7d67db..613e008 100644
--- a/compiler/optimizing/instruction_builder.cc
+++ b/compiler/optimizing/instruction_builder.cc
@@ -1065,7 +1065,7 @@
       // reject any class where this is violated. However, the verifier only does these checks
       // on non trivially dead instructions, so we just bailout the compilation.
       VLOG(compiler) << "Did not compile "
-                     << PrettyMethod(dex_compilation_unit_->GetDexMethodIndex(), *dex_file_)
+                     << dex_file_->PrettyMethod(dex_compilation_unit_->GetDexMethodIndex())
                      << " because of non-sequential dex register pair in wide argument";
       MaybeRecordStat(MethodCompilationStat::kNotCompiledMalformedOpcode);
       return false;
@@ -1079,7 +1079,7 @@
 
   if (*argument_index != invoke->GetNumberOfArguments()) {
     VLOG(compiler) << "Did not compile "
-                   << PrettyMethod(dex_compilation_unit_->GetDexMethodIndex(), *dex_file_)
+                   << dex_file_->PrettyMethod(dex_compilation_unit_->GetDexMethodIndex())
                    << " because of wrong number of arguments in invoke instruction";
     MaybeRecordStat(MethodCompilationStat::kNotCompiledMalformedOpcode);
     return false;
@@ -2716,7 +2716,7 @@
 
     default:
       VLOG(compiler) << "Did not compile "
-                     << PrettyMethod(dex_compilation_unit_->GetDexMethodIndex(), *dex_file_)
+                     << dex_file_->PrettyMethod(dex_compilation_unit_->GetDexMethodIndex())
                      << " because of unhandled instruction "
                      << instruction.Name();
       MaybeRecordStat(MethodCompilationStat::kNotCompiledUnhandledInstruction);