Expands the chrome.experimental.processes extension API....

chrome/common/extensions/api/extension_api.json

 [
   {
     "namespace": "extension",
     "unprivileged": true,
     "types": [
       {
         "id": "MessageSender",
         "type": "object",
         "description": "An object containing information about the script context that sent a message or request.",
         "properties": {
@@ skipping 2556 matching lines @@
   {
     "namespace": "experimental.processes",
     "types": [
       {
         "id": "Process",
         "type": "object",
         "description": "An object containing information about one of the browser's processes.",
         "properties": {
           "id": {
             "type": "integer",
-            "description": "The internal ID of the process."
+            "description": "The ID of the process, as provided by the OS."
+          },
+          "type": {
+            "type": "string",
+            "enum": ["browser", "renderer", "plugin", "extension"],
+            "description": "The type of process."
+          },
+          "cpu": {
+            "type": "number",
+            "description": "The most recent measurement of the process's CPU usage, between 0 and 100%."
+          },
+          "network": {
+            "type": "number",
+            "description": "The most recent measurement of the process's network usage, in kB/s."
+          },
+          "privateMemory": {
+            "type": "number",
+            "description": "The most recent measurement of the process's private memory usage, in bytes."
+          },
+          "sharedMemory": {
+            "type": "number",
+            "description": "The most recent measurement of the process's shared memory usage, in bytes."
           }
         }
       }
     ],
     "functions": [
       {
-        "name": "getProcessForTab",
+        "name": "getProcessIdForTab",
         "type": "function",
-        "description": "Returns details about the current renderer process of the specified tab.",
+        "description": "Returns the ID of the renderer process for the specified tab.",
         "parameters": [
           {
             "name": "tabId",
             "type": "integer",
             "minimum": 0
           },
           {
             "type": "function",
             "name": "callback",
             "parameters": [
               {
-                "name": "process",
-                "$ref": "Process",
-                "description": "Details about the tab's process."
+                "name": "processId",
+                "type": "integer",
+                "description": "Process ID of the tab's renderer process."
               }
             ]
           }
         ]
       }
     ],
-    "events": []
+    "events": [
+      {
+        "name": "onUpdated",
+        "type": "function",
+        "description": "Fires each time the Task Manager updates its process statistics, providing the dictionary of updated Process objects, indexed by process ID.",
+        "parameters": [
+          {
+            "name": "processes",
+            "type": "object",
+            "properties": {},
+            "additionalProperties": { "type": "any" }
+          }
+        ]
+      }
+    ]
   },
   {
     "namespace": "contextMenus",
     "types": [
       {
         "id": "OnClickData",
         "type": "object",
         "description": "Information sent when a context menu item is clicked.",
         "properties": {
           "menuItemId": {
@@ skipping 1523 matching lines @@
         "name": "setStoreLogin",
         "description": "Set a preference value with the store login.",
         "parameters": [
           { "name": "login", "type": "string" },
           { "name": "callback", "type": "function", "optional": "true" }
         ]
       }
     ]
   }
 ]