Re-land sksl fragment processor support

This reverts commit ed50200682e0de72c3abecaa4d5324ebcd1ed9f9.

Bug: skia:
Change-Id: I9caa7454b391450620d6989dc472abb3cf7a2cab
Reviewed-on: https://skia-review.googlesource.com/20965
Reviewed-by: Ben Wagner <benjaminwagner@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>

1 files changed, 9 insertions, 22 deletions

diff --git a/src/sksl/SkSLStringStream.h b/src/sksl/SkSLStringStream.h
index 9061432018..a8690668d2 100644
--- a/src/sksl/SkSLStringStream.h
+++ b/src/sksl/SkSLStringStream.h
@@ -28,12 +28,8 @@ public:
         fBuffer.append((const char*) s, size);
     }
 
-    const char* data() const {
-        return fBuffer.c_str();
-    }
-
-    size_t size() const {
-        return fBuffer.size();
+    const String& str() const {
+        return fBuffer;
     }
 
     void reset() {
@@ -54,42 +50,33 @@ namespace SkSL {
 class StringStream : public OutputStream {
 public:
     void write8(uint8_t b) override {
-        SkASSERT(!fData);
         fStream.write8(b);
     }
 
     void writeText(const char* s) override {
-        SkASSERT(!fData);
         fStream.writeText(s);
     }
 
     void write(const void* s, size_t size) override {
-        SkASSERT(!fData);
         fStream.write(s, size);
     }
 
-    const char* data() const {
-        if (!fData) {
-            fData = fStream.detachAsData();
-        }
-        return (const char*) fData->data();
-    }
-
-    size_t size() const {
-        if (!fData) {
-            fData = fStream.detachAsData();
+    const String& str() const {
+        if (!fString.size()) {
+            sk_sp<SkData> data = fStream.detachAsData();
+            fString = String((const char*) data->data(), data->size());
         }
-        return fData->size();
+        return fString;
     }
 
     void reset() {
         fStream.reset();
-        fData = nullptr;
+        fString = "";
     }
 
 private:
     mutable SkDynamicMemoryWStream fStream;
-    mutable sk_sp<SkData> fData;
+    mutable String fString;
 };
 
 #endif // SKSL_STANDALONE