Speed up GrResourceCache add and lookup by using TDynamicHash

src/gpu/GrContext.cpp

Index: src/gpu/GrContext.cpp
diff --git a/src/gpu/GrContext.cpp b/src/gpu/GrContext.cpp
index cab4414ae256e1a28813d55ee8957268fbdd0e16..74c1acb0d1c359c080fb16e45b5e1fa685ccb780 100644
--- a/src/gpu/GrContext.cpp
+++ b/src/gpu/GrContext.cpp
@@ -514,13 +514,13 @@ void GrContext::addExistingTextureToCache(GrTexture* texture) {
     if (fGpu->caps()->reuseScratchTextures() || NULL != texture->asRenderTarget()) {
         // Since this texture came from an AutoScratchTexture it should
         // still be in the exclusive pile. Recycle it.
-        fTextureCache->makeNonExclusive(texture->getCacheEntry());
+        fTextureCache->makeNonExclusive(texture);
         this->purgeCache();
     } else if (texture->getDeferredRefCount() <= 0) {
         // When we aren't reusing textures we know this scratch texture
         // will never be reused and would be just wasting time in the cache
-        fTextureCache->makeNonExclusive(texture->getCacheEntry());
-        fTextureCache->deleteResource(texture->getCacheEntry());
+        fTextureCache->makeNonExclusive(texture);
+        fTextureCache->deleteResource(texture);
     } else {
         // In this case (fDeferredRefCount > 0) but the cache is the only
         // one holding a real ref. Mark the object so when the deferred
@@ -540,14 +540,14 @@ void GrContext::unlockScratchTexture(GrTexture* texture) {
     // the same texture).
     if (texture->getCacheEntry()->key().isScratch()) {
         if (fGpu->caps()->reuseScratchTextures() || NULL != texture->asRenderTarget()) {
-            fTextureCache->makeNonExclusive(texture->getCacheEntry());
+            fTextureCache->makeNonExclusive(texture);
             this->purgeCache();
         } else if (texture->unique() && texture->getDeferredRefCount() <= 0) {
             // Only the cache now knows about this texture. Since we're never
             // reusing scratch textures (in this code path) it would just be
             // wasting time sitting in the cache.
-            fTextureCache->makeNonExclusive(texture->getCacheEntry());
-            fTextureCache->deleteResource(texture->getCacheEntry());
+            fTextureCache->makeNonExclusive(texture);
+            fTextureCache->deleteResource(texture);
         } else {
             // In this case (fRefCnt > 1 || defRefCnt > 0) but we don't really
             // want to readd it to the cache (since it will never be reused).