cleanup: Replace pointers with out-parameters and fix-up formatting

Cleans all of oat_file.h/.cc, parsed_options.h./cc, runtime.h/.cc

Other files are touched only incidentally to use outof(x) instead of &x.

Change-Id: I0bb15111149d53bb21aac2199ef33bd35333b0ca
diff --git a/oatdump/oatdump.cc b/oatdump/oatdump.cc
index b8b6a5f..99140d4 100644
--- a/oatdump/oatdump.cc
+++ b/oatdump/oatdump.cc
@@ -159,7 +159,7 @@
 
   void WalkOatDexFile(const OatFile::OatDexFile* oat_dex_file, Callback callback) {
     std::string error_msg;
-    std::unique_ptr<const DexFile> dex_file(oat_dex_file->OpenDexFile(&error_msg));
+    std::unique_ptr<const DexFile> dex_file(oat_dex_file->OpenDexFile(outof(error_msg)));
     if (dex_file.get() == nullptr) {
       return;
     }
@@ -504,7 +504,7 @@
       const OatFile::OatDexFile* oat_dex_file = oat_dex_files_[i];
       CHECK(oat_dex_file != nullptr);
       std::string error_msg;
-      std::unique_ptr<const DexFile> dex_file(oat_dex_file->OpenDexFile(&error_msg));
+      std::unique_ptr<const DexFile> dex_file(oat_dex_file->OpenDexFile(outof(error_msg)));
       if (dex_file.get() == nullptr) {
         LOG(WARNING) << "Failed to open dex file '" << oat_dex_file->GetDexFileLocation()
             << "': " << error_msg;
@@ -533,7 +533,7 @@
       const OatFile::OatDexFile* oat_dex_file = oat_dex_files_[i];
       CHECK(oat_dex_file != nullptr);
       std::string error_msg;
-      std::unique_ptr<const DexFile> dex_file(oat_dex_file->OpenDexFile(&error_msg));
+      std::unique_ptr<const DexFile> dex_file(oat_dex_file->OpenDexFile(outof(error_msg)));
       if (dex_file.get() == nullptr) {
         LOG(WARNING) << "Failed to open dex file '" << oat_dex_file->GetDexFileLocation()
             << "': " << error_msg;
@@ -593,7 +593,7 @@
     // Create the verifier early.
 
     std::string error_msg;
-    std::unique_ptr<const DexFile> dex_file(oat_dex_file.OpenDexFile(&error_msg));
+    std::unique_ptr<const DexFile> dex_file(oat_dex_file.OpenDexFile(outof(error_msg)));
     if (dex_file.get() == nullptr) {
       os << "NOT FOUND: " << error_msg << "\n\n";
       os << std::flush;
@@ -638,7 +638,7 @@
     std::string error_msg;
     std::string dex_file_location = oat_dex_file.GetDexFileLocation();
 
-    std::unique_ptr<const DexFile> dex_file(oat_dex_file.OpenDexFile(&error_msg));
+    std::unique_ptr<const DexFile> dex_file(oat_dex_file.OpenDexFile(outof(error_msg)));
     if (dex_file == nullptr) {
       os << "Failed to open dex file '" << dex_file_location << "': " << error_msg;
       return false;
@@ -1553,7 +1553,7 @@
     if (oat_file == nullptr) {
       oat_file = OatFile::Open(oat_location, oat_location,
                                nullptr, nullptr, false, nullptr,
-                               &error_msg);
+                               outof(error_msg));
       if (oat_file == nullptr) {
         os << "NOT FOUND: " << error_msg << "\n";
         return false;
@@ -2321,7 +2321,7 @@
   std::vector<std::unique_ptr<const DexFile>> dex_files;
   for (const OatFile::OatDexFile* odf : oat_file->GetOatDexFiles()) {
     std::string error_msg;
-    std::unique_ptr<const DexFile> dex_file = odf->OpenDexFile(&error_msg);
+    std::unique_ptr<const DexFile> dex_file = odf->OpenDexFile(outof(error_msg));
     CHECK(dex_file != nullptr) << error_msg;
     class_linker->RegisterDexFile(*dex_file);
     dex_files.push_back(std::move(dex_file));
@@ -2361,7 +2361,7 @@
                    std::ostream* os) {
   std::string error_msg;
   OatFile* oat_file = OatFile::Open(oat_filename, oat_filename, nullptr, nullptr, false,
-                                    nullptr, &error_msg);
+                                    nullptr, outof(error_msg));
   if (oat_file == nullptr) {
     fprintf(stderr, "Failed to open oat file from '%s': %s\n", oat_filename, error_msg.c_str());
     return EXIT_FAILURE;
@@ -2377,7 +2377,7 @@
 static int SymbolizeOat(const char* oat_filename, std::string& output_name) {
   std::string error_msg;
   OatFile* oat_file = OatFile::Open(oat_filename, oat_filename, nullptr, nullptr, false,
-                                    nullptr, &error_msg);
+                                    nullptr, outof(error_msg));
   if (oat_file == nullptr) {
     fprintf(stderr, "Failed to open oat file from '%s': %s\n", oat_filename, error_msg.c_str());
     return EXIT_FAILURE;