create GrTestUtils.h, move some common functions into it

src/gpu/GrProcessor.cpp

Index: src/gpu/GrProcessor.cpp
diff --git a/src/gpu/GrProcessor.cpp b/src/gpu/GrProcessor.cpp
index 1457bed7ba0324a5ceb17c20589845d2246e3ae1..9be9e4063ba2224982b197ef3bb7315a62c751c7 100644
--- a/src/gpu/GrProcessor.cpp
+++ b/src/gpu/GrProcessor.cpp
@@ -76,26 +76,6 @@ void GrProcessorTestFactory<GrXPFactory>::VerifyFactoryCount() {
 
 #endif
 
-namespace GrProcessorUnitTest {
-const SkMatrix& TestMatrix(SkRandom* random) {
-    static SkMatrix gMatrices[5];
-    static bool gOnce;
-    if (!gOnce) {
-        gMatrices[0].reset();
-        gMatrices[1].setTranslate(SkIntToScalar(-100), SkIntToScalar(100));
-        gMatrices[2].setRotate(SkIntToScalar(17));
-        gMatrices[3].setRotate(SkIntToScalar(185));
-        gMatrices[3].postTranslate(SkIntToScalar(66), SkIntToScalar(-33));
-        gMatrices[3].postScale(SkIntToScalar(2), SK_ScalarHalf);
-        gMatrices[4].setRotate(SkIntToScalar(215));
-        gMatrices[4].set(SkMatrix::kMPersp0, 0.00013f);
-        gMatrices[4].set(SkMatrix::kMPersp1, -0.000039f);
-        gOnce = true;
-    }
-    return gMatrices[random->nextULessThan(static_cast<uint32_t>(SK_ARRAY_COUNT(gMatrices)))];
-}
-}
-
 
 // We use a global pool protected by a mutex(spinlock). Chrome may use the same GrContext on
 // different threads. The GrContext is not used concurrently on different threads and there is a