Initial CL to create GrBatchTest infrastructure

src/gpu/GrTestUtils.cpp

Index: src/gpu/GrTestUtils.cpp
diff --git a/src/gpu/GrTestUtils.cpp b/src/gpu/GrTestUtils.cpp
index c132663d2020d1b45c2f27be6065b0faac4a32ae..f6305a55c83ce90fe7b802ab56fa9e3009dc75f2 100644
--- a/src/gpu/GrTestUtils.cpp
+++ b/src/gpu/GrTestUtils.cpp
@@ -26,4 +26,15 @@ const SkMatrix& TestMatrix(SkRandom* random) {
     }
     return gMatrices[random->nextULessThan(static_cast<uint32_t>(SK_ARRAY_COUNT(gMatrices)))];
 }
+
+const SkRect& TestRect(SkRandom* random) {
+    static SkRect gRects[1];
+    static bool gOnce;
+    // Right now just a normal rect, we could test invalid / empty rects too
+    if (!gOnce) {
+        gRects[0] = SkRect::MakeWH(1.f, 1.f);

[robertphillips, 2015/04/29 13:23:01]

gRects[1] = SkRect::MakeWH(1.0f, 256.0f);
gRects[2] = SkRect::MakeWH(256.0f, 1.0f);
gRects[3] = SkRect::MakeEmpty();
gRects[4] = SkRect::MakeLargest();
gRects[5] = SkRect::MakeLTRB(-65535.0f, -65535.0f, 65535.0f, 65535.0f);
gRects[6] = SkRect::MakeLTRB(10.0f, 10.0f, -10.0f, -10.0f);
?

+        gOnce = true;
+    }
+    return gRects[random->nextULessThan(static_cast<uint32_t>(SK_ARRAY_COUNT(gRects)))];
+}
 };