Add additional restriction to policy schema internal (part1)

components/policy/resources/policy_templates.json

Index: components/policy/resources/policy_templates.json
diff --git a/components/policy/resources/policy_templates.json b/components/policy/resources/policy_templates.json
index bfca20328ca0d9c7200639e0b9ef215b74154e0f..e55109061733d25ebb85446522d55f54ee92b0b4 100644
--- a/components/policy/resources/policy_templates.json
+++ b/components/policy/resources/policy_templates.json
@@ -4448,7 +4448,10 @@
         {
           'name': 'ScreenDimDelayAC',
           'type': 'int',
-          'schema': { 'type': 'integer' },
+          'schema': {
+            'type': 'integer',
+            'minimum': 0
+          },
           'supported_on': ['chrome_os:26-'],
           'features': {
             'dynamic_refresh': True,
@@ -4470,7 +4473,10 @@
         {
           'name': 'ScreenOffDelayAC',
           'type': 'int',
-          'schema': { 'type': 'integer' },
+          'schema': {
+            'type': 'integer',
+            'minimum': 0
+          },
           'supported_on': ['chrome_os:26-'],
           'features': {
             'dynamic_refresh': True,
@@ -4492,7 +4498,10 @@
         {
           'name': 'ScreenLockDelayAC',
           'type': 'int',
-          'schema': { 'type': 'integer' },
+          'schema': {
+            'type': 'integer',
+            'minimum': 0
+          },
           'supported_on': ['chrome_os:26-'],
           'features': {
             'dynamic_refresh': True,
@@ -4516,7 +4525,10 @@
         {
           'name': 'IdleWarningDelayAC',
           'type': 'int',
-          'schema': { 'type': 'integer' },
+          'schema': {
+            'type': 'integer',
+            'minimum': 0
+          },
           'supported_on': ['chrome_os:27-'],
           'features': {
             'dynamic_refresh': True,
@@ -4536,7 +4548,10 @@
         {
           'name': 'IdleDelayAC',
           'type': 'int',
-          'schema': { 'type': 'integer' },
+          'schema': {
+            'type': 'integer',
+            'minimum': 0
+          },
           'supported_on': ['chrome_os:26-'],
           'features': {
             'dynamic_refresh': True,
@@ -4556,7 +4571,10 @@
         {
           'name': 'ScreenDimDelayBattery',
           'type': 'int',
-          'schema': { 'type': 'integer' },
+          'schema': {
+            'type': 'integer',
+            'minimum': 0
+          },
           'supported_on': ['chrome_os:26-'],
           'features': {
             'dynamic_refresh': True,
@@ -4578,7 +4596,10 @@
         {
           'name': 'ScreenOffDelayBattery',
           'type': 'int',
-          'schema': { 'type': 'integer' },
+          'schema': {
+            'type': 'integer',
+            'minimum': 0
+          },
           'supported_on': ['chrome_os:26-'],
           'features': {
             'dynamic_refresh': True,
@@ -4600,7 +4621,10 @@
         {
           'name': 'ScreenLockDelayBattery',
           'type': 'int',
-          'schema': { 'type': 'integer' },
+          'schema': {
+            'type': 'integer',
+            'minimum': 0
+          },
           'supported_on': ['chrome_os:26-'],
           'features': {
             'dynamic_refresh': True,
@@ -4624,7 +4648,10 @@
         {
           'name': 'IdleWarningDelayBattery',
           'type': 'int',
-          'schema': { 'type': 'integer' },
+          'schema': {
+            'type': 'integer',
+            'minimum': 0
+          },
           'supported_on': ['chrome_os:27-'],
           'features': {
             'dynamic_refresh': True,
@@ -4644,7 +4671,10 @@
         {
           'name': 'IdleDelayBattery',
           'type': 'int',
-          'schema': { 'type': 'integer' },
+          'schema': {
+            'type': 'integer',
+            'minimum': 0
+          },
           'supported_on': ['chrome_os:26-'],
           'features': {
             'dynamic_refresh': True,