Add config options to run different GPU APIs to dm and nanobench

src/core/SkString.cpp

Index: src/core/SkString.cpp
diff --git a/src/core/SkString.cpp b/src/core/SkString.cpp
index d93f662da3d8bc0a80ca96903752bbcc3977ba1e..b5655e0503be9574f93047dc54f9158b343c25fc 100644
--- a/src/core/SkString.cpp
+++ b/src/core/SkString.cpp
@@ -624,16 +624,35 @@ SkString SkStringPrintf(const char* format, ...) {
     return formattedOutput;
 }
 
-void SkStrSplit(const char* str, const char* delimiters, SkTArray<SkString>* out) {
-    const char* end = str + strlen(str);
-    while (str != end) {
-        // Find a token.
-        const size_t len = strcspn(str, delimiters);
-        out->push_back().set(str, len);
-        str += len;
+void SkStrSplit(const char* str, const char* delimiters, SkStrSplitMode splitMode,
+                SkTArray<SkString>* out) {
+    if (splitMode == kCoalesce_SkStrSplitMode) {
         // Skip any delimiters.
         str += strspn(str, delimiters);
     }
+    if (!*str) {
+        return;
+    }
+
+    while (true) {
+        // Find a token.
+        const size_t len = strcspn(str, delimiters);
+        if (splitMode == kStrict_SkStrSplitMode || len > 0) {
+            out->push_back().set(str, len);
+            str += len;
+        }
+
+        if (!*str) {
+            return;
+        }
+        if (splitMode == kCoalesce_SkStrSplitMode) {
+            // Skip any delimiters.
+            str += strspn(str, delimiters);
+        } else {
+            // Skip one delimiter.
+            str += 1;
+        }
+    }
 }
 
 #undef VSNPRINTF