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/interpreter/interpreter_common.h b/runtime/interpreter/interpreter_common.h
index bdb6bd3..40d6f03 100644
--- a/runtime/interpreter/interpreter_common.h
+++ b/runtime/interpreter/interpreter_common.h
@@ -438,7 +438,7 @@
   if (kTraceExecutionEnabled) {
 #define TRACE_LOG std::cerr
     std::ostringstream oss;
-    oss << PrettyMethod(shadow_frame.GetMethod())
+    oss << shadow_frame.GetMethod()->PrettyMethod()
         << StringPrintf("\n0x%x: ", dex_pc)
         << inst->DumpString(shadow_frame.GetMethod()->GetDexFile()) << "\n";
     for (uint32_t i = 0; i < shadow_frame.NumberOfVRegs(); ++i) {
@@ -450,7 +450,7 @@
             !ref_value->AsString()->IsValueNull()) {
           oss << "/java.lang.String \"" << ref_value->AsString()->ToModifiedUtf8() << "\"";
         } else {
-          oss << "/" << PrettyTypeOf(ref_value);
+          oss << "/" << ref_value->PrettyTypeOf();
         }
       }
     }