Add extension API to change window show state using chrome.windows.update().

chrome/common/extensions/api/extension_api.json

Index: chrome/common/extensions/api/extension_api.json
diff --git a/chrome/common/extensions/api/extension_api.json b/chrome/common/extensions/api/extension_api.json
index 6be5b4bc95a5561b1671bfa9e397df79538bd5e6..47fe9375459cebea48b16f9f657008da5f270a1e 100644
--- a/chrome/common/extensions/api/extension_api.json
+++ b/chrome/common/extensions/api/extension_api.json
@@ -1157,7 +1157,12 @@
             "type": "string",
             "description": "The type of browser window this is.",
             "enum": ["normal", "popup", "panel", "app"]
-          }
+          },
+          "state": {
+            "type": "string",
+            "description": "The state of this browser window.",
+            "enum": ["normal", "minimized", "maximized"]
+            }
         }
       }
     ],
@@ -1305,7 +1310,13 @@
               "width": {"type": "integer", "minimum": 0, "optional": true, "description": "The width to resize the window to in pixels. This value is ignored for panels."},
               "height": {"type": "integer", "minimum": 0, "optional": true, "description": "The height to resize the window to in pixels. This value is ignored for panels."},
               "focused": {"type": "boolean", "optional": true, "description": "If true, brings the window to the front. If false, brings the next window in the z-order to the front."},
-              "drawAttention": {"type": "boolean", "optional": true, "description": "If true, causes the window to be displayed in a manner that draws the user's attention to the window, without changing the focused window. The effect lasts until the user changes focus to the window. This option has no effect if set to false or if the window already has focus."}
+              "drawAttention": {"type": "boolean", "optional": true, "description": "If true, causes the window to be displayed in a manner that draws the user's attention to the window, without changing the focused window. The effect lasts until the user changes focus to the window. This option has no effect if set to false or if the window already has focus."},
+              "state": {
+                "type": "string",
+                "optional": true,
+                "description": "The new state of the window. The 'minimized' and 'maximized' states cannot be combined with 'left', 'top', 'width' or 'height'.",
+                "enum": ["normal", "minimized", "maximized"]
+              }
             }
           },
           {