Set up cache in vulkan to reuse GrVkPrograms (aka VkPipelines)

src/gpu/gl/GrGLGpuProgramCache.cpp

Index: src/gpu/gl/GrGLGpuProgramCache.cpp
diff --git a/src/gpu/gl/GrGLGpuProgramCache.cpp b/src/gpu/gl/GrGLGpuProgramCache.cpp
index f37264aa1de14931035f4899f20164994dafb6a9..dc449f8159e6d4b35bbc5217670e5cf3c7ec3fe2 100644
--- a/src/gpu/gl/GrGLGpuProgramCache.cpp
+++ b/src/gpu/gl/GrGLGpuProgramCache.cpp
@@ -77,7 +77,7 @@ GrGLGpu::ProgramCache::~ProgramCache() {
 #endif
 }
 
-void GrGLGpu::ProgramCache::reset() {
+void GrGLGpu::ProgramCache::abandon() {
     for (int i = 0; i < fCount; ++i) {
         SkASSERT(fEntries[i]->fProgram.get());
         fEntries[i]->fProgram->abandon();
@@ -99,10 +99,6 @@ void GrGLGpu::ProgramCache::reset() {
 #endif
 }
 
-void GrGLGpu::ProgramCache::abandon() {
-    this->reset();
-}
-
 int GrGLGpu::ProgramCache::search(const GrProgramDesc& desc) const {
     ProgDescLess less;
     return SkTSearch(fEntries, fCount, desc, sizeof(Entry*), less);