patch from issue 886233004 at patchset 40001 (http://crrev.com/886233004#ps40001)

dm/DMGpuSupport.h

 #ifndef DMGpuSupport_DEFINED
 #define DMGpuSupport_DEFINED
 
 // Provides Ganesh to DM,
 // or if it's not available, fakes it enough so most code doesn't have to know that.
 
 #include "SkSurface.h"
 
 #if SK_SUPPORT_GPU
 
@@ skipping 24 matching lines @@
 
 // Ganesh is not available.  Fake it.
 
 enum GrGLStandard {
     kNone_GrGLStandard,
     kGL_GrGLStandard,
     kGLES_GrGLStandard
 };
 static const int kGrGLStandardCnt = 3;
 
+class GrContext {
+public:
+    void dumpCacheStats(SkString*) const {}
+    void dumpGpuStats(SkString*) const {}
+};
+
 class GrContextFactory {
 public:
     typedef int GLContextType;
 
     static const GLContextType kANGLE_GLContextType  = 0,
                                kDebug_GLContextType  = 0,
                                kMESA_GLContextType   = 0,
                                kNVPR_GLContextType   = 0,
                                kNative_GLContextType = 0,
                                kNull_GLContextType   = 0;
@@ skipping 14 matching lines @@
                                        int,
                                        bool) {
     return NULL;
 }
 
 }  // namespace DM
 
 #endif//SK_SUPPORT_GPU
 
 #endif//DMGpuSupport_DEFINED