Add caps overrides to GMs

dm/DMGpuSupport.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef DMGpuSupport_DEFINED
 #define DMGpuSupport_DEFINED
 
@@ skipping 37 matching lines @@
     kGLES_GrGLStandard
 };
 static const int kGrGLStandardCnt = 3;
 
 class GrContext {
 public:
     void dumpCacheStats(SkString*) const {}
     void dumpGpuStats(SkString*) const {}
 };
 
+struct GrContextOptions {};
+
 class GrContextFactory {
 public:
+    GrContextFactory() {};
+    explicit GrContextFactory(const GrContextOptions&) {}
+
     typedef int GLContextType;
 
     static const GLContextType kANGLE_GLContextType  = 0,
                                kDebug_GLContextType  = 0,
                                kMESA_GLContextType   = 0,
                                kNVPR_GLContextType   = 0,
                                kNative_GLContextType = 0,
                                kNull_GLContextType   = 0;
     static const int kGLContextTypeCnt = 1;
     void destroyContexts() {}
@@ skipping 12 matching lines @@
                                        int,
                                        bool) {
     return NULL;
 }
 
 }  // namespace DM
 
 #endif//SK_SUPPORT_GPU
 
 #endif//DMGpuSupport_DEFINED