Adding run_at to chrome.tabs.executeScript/insertCss.

chrome/common/extensions/api/tabs.json

Index: chrome/common/extensions/api/tabs.json
diff --git a/chrome/common/extensions/api/tabs.json b/chrome/common/extensions/api/tabs.json
index ef78c2ebab4d17e1e02071be1e77ec7bdc76ccc1..848bae4337cdbd928a24e92ac4f57df883ce8702 100644
--- a/chrome/common/extensions/api/tabs.json
+++ b/chrome/common/extensions/api/tabs.json
@@ -605,7 +605,13 @@
             "properties": {
               "code": {"type": "string", "optional": true, "description": "JavaScript code to execute."},
               "file": {"type": "string", "optional": true, "description": "JavaScript file to execute."},
-              "allFrames": {"type": "boolean", "optional": true, "description": "If allFrames is true, this function injects script into all frames of current page. By default, it's false and script is injected only into the top main frame."}
+              "allFrames": {"type": "boolean", "optional": true, "description": "If allFrames is true, this function injects script into all frames of current page. By default, it's false and script is injected only into the top main frame."},
+              "runAt": {
+                "type": "string",
+                "optional": true,
+                "enum": ["document_start", "document_end", "document_idle"],
+                "description": "The soonest that the script will be injected into the tab. Defaults to \"document_idle\"."
+              }
             }
           },
           {
@@ -630,7 +636,13 @@
             "properties": {
               "code": {"type": "string", "optional": true, "description": "CSS code to be injected."},
               "file": {"type": "string", "optional": true, "description": "CSS file to be injected."},
-              "allFrames": {"type": "boolean", "optional": true, "description": "If allFrames is true, this function injects CSS text into all frames of current page. By default, it's false and CSS is injected only into the top main frame."}
+              "allFrames": {"type": "boolean", "optional": true, "description": "If allFrames is true, this function injects CSS text into all frames of current page. By default, it's false and CSS is injected only into the top main frame."},
+              "runAt": {
+                "type": "string",
+                "optional": true,
+                "enum": ["document_start", "document_end", "document_idle"],
+                "description": "The soonest that the CSS will be injected into the tab. Defaults to \"document_idle\"."
+              }
             }
           },
           {