Improve profile processing

- allow file descriptors in addition to file names for profiles
- fix some minor issues (wrong comparison signs, unhandled errors)
- added gtests for profile_compilation_info, profile_assistant
and compiler_driver

Bug: 26080105
Change-Id: I136039fa1f25858399000049e48b01eafae54eb1
diff --git a/compiler/profile_assistant.h b/compiler/profile_assistant.h
index 088c8bd..ad5e216 100644
--- a/compiler/profile_assistant.h
+++ b/compiler/profile_assistant.h
@@ -20,6 +20,7 @@
 #include <string>
 #include <vector>
 
+#include "base/scoped_flock.h"
 #include "jit/offline_profiling_info.cc"
 
 namespace art {
@@ -52,7 +53,17 @@
       const std::vector<std::string>& reference_profile_files,
       /*out*/ ProfileCompilationInfo** profile_compilation_info);
 
+  static bool ProcessProfiles(
+      const std::vector<uint32_t>& profile_files_fd_,
+      const std::vector<uint32_t>& reference_profile_files_fd_,
+      /*out*/ ProfileCompilationInfo** profile_compilation_info);
+
  private:
+  static bool ProcessProfilesInternal(
+      const std::vector<ScopedFlock>& profile_files,
+      const std::vector<ScopedFlock>& reference_profile_files,
+      /*out*/ ProfileCompilationInfo** profile_compilation_info);
+
   DISALLOW_COPY_AND_ASSIGN(ProfileAssistant);
 };