Revert of third try at landing improved blur rect; this time with more correctness

tests/BlurTest.cpp

Index: tests/BlurTest.cpp
diff --git a/tests/BlurTest.cpp b/tests/BlurTest.cpp
index 143d777e88d4662114f26b83c9f854eba53c189f..c09a4ee1c664e548107c739b6d5f13a7c1728c95 100644
--- a/tests/BlurTest.cpp
+++ b/tests/BlurTest.cpp
@@ -273,8 +273,6 @@
 }
 
 #if SK_SUPPORT_GPU
-#if 0
-// temporary disable; see below for explanation
 static bool gpu_blur_path(GrContextFactory* factory, const SkPath& path,
                           SkScalar gaussianSigma,
                           int* result, int resultCount) {
@@ -299,7 +297,6 @@
     readback(&canvas, result, resultCount);
     return true;
 }
-#endif
 #endif
 
 #if WRITE_CSV
@@ -346,6 +343,9 @@
 
     int rectSpecialCaseResult[kSize];
     int generalCaseResult[kSize];
+#if SK_SUPPORT_GPU
+    int gpuResult[kSize];
+#endif
     int groundTruthResult[kSize];
     int bruteForce1DResult[kSize];
 
@@ -355,23 +355,19 @@
 
         cpu_blur_path(rectPath, sigma, rectSpecialCaseResult, kSize);
         cpu_blur_path(polyPath, sigma, generalCaseResult, kSize);
-
+#if SK_SUPPORT_GPU
+        bool haveGPUResult = gpu_blur_path(factory, rectPath, sigma, gpuResult, kSize);
+#endif
         ground_truth_2d(100, 100, sigma, groundTruthResult, kSize);
         brute_force_1d(-50.0f, 50.0f, sigma, bruteForce1DResult, kSize);
 
         REPORTER_ASSERT(reporter, match(rectSpecialCaseResult, bruteForce1DResult, kSize, 5));
         REPORTER_ASSERT(reporter, match(generalCaseResult, bruteForce1DResult, kSize, 15));
 #if SK_SUPPORT_GPU
-#if 0
-        int gpuResult[kSize];
-        bool haveGPUResult = gpu_blur_path(factory, rectPath, sigma, gpuResult, kSize);
-        // Disabling this test for now -- I don't think it's a legit comparison.
-        // Will continue to investigate this.
         if (haveGPUResult) {
             // 1 works everywhere but: Ubuntu13 & Nexus4
             REPORTER_ASSERT(reporter, match(gpuResult, bruteForce1DResult, kSize, 10));
         }
-#endif
 #endif
         REPORTER_ASSERT(reporter, match(groundTruthResult, bruteForce1DResult, kSize, 1));