Refactor how we handle resources path in Tests.

dm/DM.cpp

 // Main binary for DM.
 // For a high-level overview, please see dm/README.
 
 #include "SkBenchmark.h"
 #include "SkCommandLineFlags.h"
 #include "SkForceLinking.h"
 #include "SkGraphics.h"
 #include "SkPicture.h"
 #include "SkString.h"
 #include "Test.h"
@@ skipping 212 matching lines @@
 int tool_main(int argc, char** argv) {
     SkAutoGraphics ag;
     SkCommandLineFlags::Parse(argc, argv);
 
     if (FLAGS_dryRun) {
         FLAGS_verbose = true;
     }
 #if SK_ENABLE_INST_COUNT
     gPrintInstCount = FLAGS_leaks;
 #endif
-    GM::SetResourcePath(FLAGS_resources[0]);
-    SkBenchmark::SetResourcePath(FLAGS_resources[0]);
-    Test::SetResourcePath(FLAGS_resources[0]);
 
     SkTArray<SkString> configs;
     for (int i = 0; i < FLAGS_config.count(); i++) {
         SkStrSplit(FLAGS_config[i], ", ", &configs);
     }
 
     SkTDArray<GMRegistry::Factory> gms;
     SkAutoTDelete<DM::Expectations> expectations(SkNEW(DM::NoExpectations));
     if (FLAGS_gms) {
         append_matching_factories<GM>(GMRegistry::Head(), &gms);
@@ skipping 36 matching lines @@
     reporter.getFailures(&failures);
     report_failures(failures);
     return failures.count() > 0;
 }
 
 #if !defined(SK_BUILD_FOR_IOS) && !defined(SK_BUILD_FOR_NACL)
 int main(int argc, char** argv) {
     return tool_main(argc, argv);
 }
 #endif