Reland path bounds change with correct bounds for convex and hairline path renderers.

R=robertphillips@google.com

Review URL: https://codereview.chromium.org/15465005

git-svn-id: http://skia.googlecode.com/svn/trunk@9194 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrPathRenderer.cpp b/src/gpu/GrPathRenderer.cpp
index e0d2682..e88db22 100644
--- a/src/gpu/GrPathRenderer.cpp
+++ b/src/gpu/GrPathRenderer.cpp
@@ -12,3 +12,15 @@
 
 GrPathRenderer::GrPathRenderer() {
 }
+
+void GrPathRenderer::GetPathDevBounds(const SkPath& path,
+                                      int devW, int devH,
+                                      const SkMatrix& matrix,
+                                      SkRect* bounds) {
+    if (path.isInverseFillType()) {
+        *bounds = SkRect::MakeWH(SkIntToScalar(devW), SkIntToScalar(devH));
+        return;
+    }
+    *bounds = path.getBounds();
+    matrix.mapRect(bounds);
+}