[flash] Mark Flash as deprecated in the JSON files

Bug: 1069833
Change-Id: I8e2dee39bc3dd7b9ce75f900deb9d11fbc458358
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2519369Reviewed-by: Will Harris <wfh@chromium.org>
Commit-Queue: Will Harris <wfh@chromium.org>
Commit-Queue: Tommy Li <tommycli@chromium.org>
Cr-Commit-Position: refs/heads/master@{#824660}

chrome/browser/resources/plugin_metadata/plugins_chromeos.json

 {
-  "x-version": 4,
+  "x-version": 5,
   "google-talk": {
     "mime_types": [
     ],
@@ -28,7 +28,8 @@
     "help_url": "https://support.google.com/chrome/?p=plugin_flash",
     "url": "http://get.adobe.com/flashplayer/",
     "displayurl": true,
-    "group_name_matcher": "*Shockwave Flash*"
+    "group_name_matcher": "*Shockwave Flash*",
+    "plugin_is_deprecated": true
   },
   "google-chrome-pdf": {
     "mime_types": [

chrome/browser/resources/plugin_metadata/plugins_linux.json

 {
-  "x-version": 45,
+  "x-version": 46,
   "adobe-flash-player": {
     "mime_types": [
       "application/futuresplash",
@@ -20,7 +20,8 @@
     "help_url": "https://support.google.com/chrome/?p=plugin_flash",
     "url": "https://support.google.com/chrome/answer/6258784",
     "displayurl": true,
-    "group_name_matcher": "*Shockwave Flash*"
+    "group_name_matcher": "*Shockwave Flash*",
+    "plugin_is_deprecated": true
   },
   "google-chrome-pdf": {
     "mime_types": [

chrome/browser/resources/plugin_metadata/plugins_mac.json

 {
-  "x-version": 51,
+  "x-version": 52,
   "adobe-flash-player": {
     "mime_types": [
       "application/futuresplash",
@@ -17,7 +17,8 @@
     "url": "https://support.google.com/chrome/answer/6258784",
     "help_url": "https://support.google.com/chrome/?p=plugin_flash",
     "displayurl": true,
-    "group_name_matcher": "*Shockwave Flash*"
+    "group_name_matcher": "*Shockwave Flash*",
+    "plugin_is_deprecated": true
   },
   "google-chrome-pdf": {
     "mime_types": [

chrome/browser/resources/plugin_metadata/plugins_win.json

 {
-  "x-version": 60,
+  "x-version": 61,
   "adobe-flash-player": {
     "mime_types": [
       "application/futuresplash",
@@ -17,7 +17,8 @@
     "help_url": "https://support.google.com/chrome/?p=plugin_flash",
     "url": "https://support.google.com/chrome/answer/6258784",
     "displayurl": true,
-    "group_name_matcher": "*Shockwave Flash*"
+    "group_name_matcher": "*Shockwave Flash*",
+    "plugin_is_deprecated": true
   },
   "google-chrome-pdf": {
     "mime_types": [