Rename SkMatrix::get(Max|Min)Stretch to get(Min|Max)Scale

R=reed@google.com

Author: bsalomon@google.com

Review URL: https://codereview.chromium.org/295713002

git-svn-id: http://skia.googlecode.com/svn/trunk@14798 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/SkGpuDevice.cpp b/src/gpu/SkGpuDevice.cpp
index 854839d..cddf50a 100644
--- a/src/gpu/SkGpuDevice.cpp
+++ b/src/gpu/SkGpuDevice.cpp
@@ -1184,7 +1184,7 @@
             break;
         case SkPaint::kMedium_FilterLevel:
             tileFilterPad = 1;
-            if (fContext->getMatrix().getMinStretch() < SK_Scalar1) {
+            if (fContext->getMatrix().getMinScale() < SK_Scalar1) {
                 textureFilterMode = GrTextureParams::kMipMap_FilterMode;
             } else {
                 // Don't trigger MIP level generation unnecessarily.
@@ -1193,7 +1193,7 @@
             break;
         case SkPaint::kHigh_FilterLevel:
             // Minification can look bad with the bicubic effect.
-            if (fContext->getMatrix().getMinStretch() >= SK_Scalar1) {
+            if (fContext->getMatrix().getMinScale() >= SK_Scalar1) {
                 // We will install an effect that does the filtering in the shader.
                 textureFilterMode = GrTextureParams::kNone_FilterMode;
                 tileFilterPad = GrBicubicEffect::kFilterTexelPad;