Add matrix constructing helpers to SkMatrix

Review URL: https://codereview.chromium.org/1034273002

4 files changed, 5 insertions, 9 deletions

diff --git a/bench/DashBench.cpp b/bench/DashBench.cpp
index 17a9234926..bf0d456143 100644
--- a/bench/DashBench.cpp
+++ b/bench/DashBench.cpp
@@ -153,8 +153,7 @@ static void make_unit_star(SkPath* path, int n) {
 
 static void make_poly(SkPath* path) {
     make_unit_star(path, 9);
-    SkMatrix matrix;
-    matrix.setScale(SkIntToScalar(100), SkIntToScalar(100));
+    const SkMatrix matrix = SkMatrix::MakeScale(SkIntToScalar(100), SkIntToScalar(100));
     path->transform(matrix);
 }
 
diff --git a/bench/HairlinePathBench.cpp b/bench/HairlinePathBench.cpp
index 5b77ff8b49..67f5476724 100644
--- a/bench/HairlinePathBench.cpp
+++ b/bench/HairlinePathBench.cpp
@@ -59,8 +59,7 @@ protected:
         SkPath path;
         this->makePath(&path);
         if (fFlags & kBig_Flag) {
-            SkMatrix m;
-            m.setScale(SkIntToScalar(3), SkIntToScalar(3));
+            const SkMatrix m = SkMatrix::MakeScale(SkIntToScalar(3), SkIntToScalar(3));
             path.transform(m);
         }
 
diff --git a/bench/PathBench.cpp b/bench/PathBench.cpp
index a429e2f972..710179a437 100644
--- a/bench/PathBench.cpp
+++ b/bench/PathBench.cpp
@@ -57,8 +57,7 @@ protected:
         SkPath path;
         this->makePath(&path);
         if (fFlags & kBig_Flag) {
-            SkMatrix m;
-            m.setScale(SkIntToScalar(10), SkIntToScalar(10));
+            const SkMatrix m = SkMatrix::MakeScale(SkIntToScalar(10), SkIntToScalar(10));
             path.transform(m);
         }
 
diff --git a/bench/SKPBench.cpp b/bench/SKPBench.cpp
index 3f521799fa..6f74ff942d 100644
--- a/bench/SKPBench.cpp
+++ b/bench/SKPBench.cpp
@@ -116,9 +116,8 @@ void SKPBench::onDraw(const int loops, SkCanvas* canvas) {
     } else {
         for (int i = 0; i < loops; i++) {
             for (int j = 0; j < fTileRects.count(); ++j) {
-                SkMatrix trans;
-                trans.setTranslate(-fTileRects[j].fLeft / fScale,
-                                   -fTileRects[j].fTop / fScale);
+                const SkMatrix trans = SkMatrix::MakeTrans(-fTileRects[j].fLeft / fScale,
+                                                           -fTileRects[j].fTop / fScale);
                 fSurfaces[j]->getCanvas()->drawPicture(fPic, &trans, NULL);
             }