Remove rects GM from ignored-tests.txt and rebaseline

expectations/gm/Test-ChromeOS-Alex-GMA3150-x86-Debug/expected-results.json

 {
   "expected-results": {
     "3x3bitmaprect_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           12831071530564277917
         ]
       ], 
       "bugs": [
@@ skipping 4817 matching lines @@
       ], 
       "bugs": [
         1578
       ], 
       "reviewed-by-human": false
     }, 
     "rects_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          14869900129777657205
+          1097877542064832374
         ]
       ], 
-      "bugs": [
-        1578
-      ], 
-      "reviewed-by-human": false
+      "reviewed-by-human": true
     }, 
     "rects_8888.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          14325618834507519953
+          17158160125339839443
         ]
       ], 
-      "bugs": [
-        1578
-      ], 
-      "reviewed-by-human": false
+      "reviewed-by-human": true
     }, 
     "roundrects_565.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           17752420136993868343
         ]
       ], 
       "reviewed-by-human": true
     }, 
@@ skipping 1254 matching lines @@
           2149562185397201955
         ]
       ], 
       "bugs": [
         1578
       ], 
       "reviewed-by-human": false
     }
   }
 }