AI 144018: change path to return its internal cached bounds, making it much lighter-weight to get the bounds.
  BUG=1748928

Automated import of CL 144018
diff --git a/core/jni/android/graphics/Path.cpp b/core/jni/android/graphics/Path.cpp
index effb1c8..11c608c 100644
--- a/core/jni/android/graphics/Path.cpp
+++ b/core/jni/android/graphics/Path.cpp
@@ -75,9 +75,8 @@
         return result;
     }
  
-    static void computeBounds(JNIEnv* env, jobject clazz, SkPath* obj, jobject bounds, SkPath::BoundsType btype) {
-        SkRect bounds_;
-        obj->computeBounds(&bounds_, btype);
+    static void computeBounds(JNIEnv* env, jobject clazz, SkPath* obj, jobject bounds, int boundstype) {
+        const SkRect& bounds_ = obj->getBounds();
         GraphicsJNI::rect_to_jrectf(bounds_, env, bounds);
     }