Fixing broken images

gm/rebaseline_server/testdata/outputs/expected/compare_configs_test.CompareConfigsTest.test_gm/gm.json

 {
   "extraColumnHeaders": {
     "builder": {
       "headerText": "builder", 
       "isFilterable": true, 
       "isSortable": true, 
       "useFreeformFilter": false, 
       "valuesAndCounts": [
         [
           "Test-Android-GalaxyNexus-SGX540-Arm7-Release", 
@@ skipping 86 matching lines @@
       ]
     }
   }, 
   "extraColumnOrder": [
     "builder", 
     "config", 
     "resultType", 
     "test"
   ], 
   "header": {
-    "dataHash": "-5829724510169924592", 
+    "dataHash": "-8474691963189557240", 
     "isEditable": false, 
     "isExported": true, 
     "schemaVersion": 5, 
     "timeNextUpdateAvailable": null, 
     "timeUpdated": 12345678, 
     "type": "all"
   }, 
   "imagePairs": [
     {
       "extraColumns": {
@@ skipping 67 matching lines @@
         "config": "TODO", 
         "resultType": "no-comparison", 
         "test": "aaclip"
       }, 
       "imageAUrl": "bitmap-64bitMD5/aaclip/14456211900777561488.png", 
       "imageBUrl": null, 
       "isDifferent": true
     }, 
     {
       "differenceData": {
+        "diffUrl": "bitmap-64bitMD5_displacement_11401048196735046263_png_png-vs-bitmap-64bitMD5_displacement_5698561127291561694_png_png.png", 
         "maxDiffPerChannel": [
           136, 
           68, 
           34
         ], 
         "numDifferingPixels": 6081, 
         "percentDifferingPixels": 2.4324, 
-        "perceptualDifference": 1.9172010000000057
+        "perceptualDifference": 1.9172010000000057, 
+        "whiteDiffUrl": "bitmap-64bitMD5_displacement_11401048196735046263_png_png-vs-bitmap-64bitMD5_displacement_5698561127291561694_png_png.png"
       }, 
       "extraColumns": {
         "builder": "Test-Builder-We-Have-No-Expectations-File-For", 
         "config": "TODO", 
         "resultType": "failed", 
         "test": "displacement"
       }, 
       "imageAUrl": "bitmap-64bitMD5/displacement/11401048196735046263.png", 
       "imageBUrl": "bitmap-64bitMD5/displacement/5698561127291561694.png", 
       "isDifferent": true
     }, 
     {
       "differenceData": {
+        "diffUrl": "bitmap-64bitMD5_bigblurs_17309852422285247848_png_png-vs-bitmap-64bitMD5_bigblurs_1822195599289208664_png_png.png", 
         "maxDiffPerChannel": [
           255, 
           221, 
           221
         ], 
         "numDifferingPixels": 50097, 
         "percentDifferingPixels": 30.5767822265625, 
-        "perceptualDifference": 3.391725000000008
+        "perceptualDifference": 3.391725000000008, 
+        "whiteDiffUrl": "bitmap-64bitMD5_bigblurs_17309852422285247848_png_png-vs-bitmap-64bitMD5_bigblurs_1822195599289208664_png_png.png"
       }, 
       "extraColumns": {
         "builder": "Test-Builder-We-Have-No-Expectations-File-For", 
         "config": "TODO", 
         "resultType": "failed", 
         "test": "bigblurs"
       }, 
       "imageAUrl": "bitmap-64bitMD5/bigblurs/17309852422285247848.png", 
       "imageBUrl": "bitmap-64bitMD5/bigblurs/1822195599289208664.png", 
       "isDifferent": true
@@ skipping 15 matching lines @@
         "config": "TODO", 
         "resultType": "no-comparison", 
         "test": "blanket-ignored"
       }, 
       "imageAUrl": "bitmap-64bitMD5/blanket-ignored/22222222.png", 
       "imageBUrl": null, 
       "isDifferent": true
     }, 
     {
       "differenceData": {
+        "diffUrl": "bitmap-64bitMD5_displacement_11401048196735046263_png_png-vs-bitmap-64bitMD5_displacement_5698561127291561694_png_png.png", 
         "maxDiffPerChannel": [
           136, 
           68, 
           34
         ], 
         "numDifferingPixels": 6081, 
         "percentDifferingPixels": 2.4324, 
-        "perceptualDifference": 1.9172010000000057
+        "perceptualDifference": 1.9172010000000057, 
+        "whiteDiffUrl": "bitmap-64bitMD5_displacement_11401048196735046263_png_png-vs-bitmap-64bitMD5_displacement_5698561127291561694_png_png.png"
       }, 
       "extraColumns": {
         "builder": "Test-Mac10.7-MacMini4.1-GeForce320M-x86_64-Debug", 
         "config": "TODO", 
         "resultType": "failed", 
         "test": "displacement"
       }, 
       "imageAUrl": "bitmap-64bitMD5/displacement/11401048196735046263.png", 
       "imageBUrl": "bitmap-64bitMD5/displacement/5698561127291561694.png", 
       "isDifferent": true
     }, 
     {
       "differenceData": {
+        "diffUrl": "bitmap-64bitMD5_bigblurs_17309852422285247848_png_png-vs-bitmap-64bitMD5_bigblurs_1822195599289208664_png_png.png", 
         "maxDiffPerChannel": [
           255, 
           221, 
           221
         ], 
         "numDifferingPixels": 50097, 
         "percentDifferingPixels": 30.5767822265625, 
-        "perceptualDifference": 3.391725000000008
+        "perceptualDifference": 3.391725000000008, 
+        "whiteDiffUrl": "bitmap-64bitMD5_bigblurs_17309852422285247848_png_png-vs-bitmap-64bitMD5_bigblurs_1822195599289208664_png_png.png"
       }, 
       "extraColumns": {
         "builder": "Test-Mac10.7-MacMini4.1-GeForce320M-x86_64-Debug", 
         "config": "TODO", 
         "resultType": "failed", 
         "test": "bigblurs"
       }, 
       "imageAUrl": "bitmap-64bitMD5/bigblurs/17309852422285247848.png", 
       "imageBUrl": "bitmap-64bitMD5/bigblurs/1822195599289208664.png", 
       "isDifferent": true
@@ skipping 22 matching lines @@
     "imageB": {
       "baseUrl": "http://chromium-skia-gm.commondatastorage.googleapis.com/gm", 
       "description": "gpu"
     }, 
     "whiteDiffs": {
       "baseUrl": "/static/generated-images/whitediffs", 
       "description": "differing pixels in white"
     }
   }
 }