Update Flash plugin metadata versions to latest version.

https://helpx.adobe.com/security/products/flash-player/apsb18-44.html

BUG=412078
TBR=jschuh@chromium.org

Change-Id: I515c0945b0191056022e00ae9b1a79869b3471f2
Reviewed-on: https://chromium-review.googlesource.com/c/1355608Reviewed-by: Will Harris <wfh@chromium.org>
Commit-Queue: Will Harris <wfh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#612374}

chrome/browser/resources/plugin_metadata/plugins_linux.json

 {
-  "x-version": 35,
+  "x-version": 36,
   "adobe-flash-player": {
     "mime_types": [
       "application/futuresplash",
@@ -10,9 +10,9 @@
     ],
     "versions": [
       {
-        "version": "31.0.0.122",
+        "version": "31.0.0.153",
         "status": "up_to_date",
-        "reference": "https://helpx.adobe.com/security/products/flash-player/apsb18-35.html"
+        "reference": "https://helpx.adobe.com/security/products/flash-player/apsb18-44.html"
       }
     ],
     "lang": "en-US",

chrome/browser/resources/plugin_metadata/plugins_mac.json

 {
-  "x-version": 41,
+  "x-version": 42,
   "adobe-flash-player": {
     "mime_types": [
       "application/futuresplash",
@@ -7,9 +7,9 @@
     ],
     "versions": [
       {
-        "version": "31.0.0.122",
+        "version": "31.0.0.153",
         "status": "requires_authorization",
-        "reference": "https://helpx.adobe.com/security/products/flash-player/apsb18-35.html"
+        "reference": "https://helpx.adobe.com/security/products/flash-player/apsb18-44.html"
       }
     ],
     "lang": "en-US",

chrome/browser/resources/plugin_metadata/plugins_win.json

 {
-  "x-version": 50,
+  "x-version": 51,
   "adobe-flash-player": {
     "mime_types": [
       "application/futuresplash",
@@ -7,9 +7,9 @@
     ],
     "versions": [
       {
-        "version": "31.0.0.122",
+        "version": "31.0.0.153",
         "status": "requires_authorization",
-        "reference": "https://helpx.adobe.com/security/products/flash-player/apsb18-35.html"
+        "reference": "https://helpx.adobe.com/security/products/flash-player/apsb18-44.html"
       }
     ],
     "lang": "en-US",