Fix type in DM/mesa

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 "SkString.h"
 #include "Test.h"
 #include "gm.h"
@@ skipping 52 matching lines @@
 static const GrContextFactory::GLContextType null   = GrContextFactory::kNull_GLContextType;
 static const GrContextFactory::GLContextType debug  = GrContextFactory::kDebug_GLContextType;
 static const GrContextFactory::GLContextType angle  =
 #if SK_ANGLE
 GrContextFactory::kANGLE_GLContextType;
 #else
 native;
 #endif
 static const GrContextFactory::GLContextType mesa   =
 #if SK_MESA
-GLContextFactory::kMESA_GLContextType;
+GrContextFactory::kMESA_GLContextType;
 #else
 native;
 #endif
 
 static void kick_off_gms(const SkTDArray<GMRegistry::Factory>& gms,
                          const SkTArray<SkString>& configs,
                          const DM::Expectations& expectations,
                          DM::Reporter* reporter,
                          DM::TaskRunner* tasks) {
 #define START(name, type, ...)                                                        \
@@ skipping 139 matching lines @@
     SkGraphics::Term();
 
     return reporter.failed() > 0;
 }
 
 #if !defined(SK_BUILD_FOR_IOS) && !defined(SK_BUILD_FOR_NACL)
 int main(int argc, char** argv) {
     return tool_main(argc, argv);
 }
 #endif