Make the extension API docs point out the minimum version that supports an API call.

chrome/common/extensions/docs/template/api_template.html

Index: chrome/common/extensions/docs/template/api_template.html
diff --git a/chrome/common/extensions/docs/template/api_template.html b/chrome/common/extensions/docs/template/api_template.html
index c9cbcbc52eed31815f197b6a65647bd9001a479a..90cda984dc19c4a5b0a4712a9fea93b36d34a2b4 100644
--- a/chrome/common/extensions/docs/template/api_template.html
+++ b/chrome/common/extensions/docs/template/api_template.html
@@ -43,6 +43,15 @@
               jsvalues=".innerHTML:$this.description">
             Description of this parameter from the json schema.
           </dd>
+          <dd jsdisplay="$this.min_version">
+            This parameter was added in version
+            <b><span jscontent="$this.min_version"></span></b>.
+            You must omit this parameter in earlier versions,
+            and you may omit it in any version.  If you require this
+            parameter, the manifest key
+            <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
+            can ensure that your extension won't be run in an earlier browser version.
+          </dd>
 
           <!-- OBJECT PROPERTIES -->
           <dd jsdisplay="shouldExpandObject($this)">
@@ -342,6 +351,13 @@
                   </div>
                 </div>
 
+                <!-- MIN_VERSION -->
+                <p jsdisplay="min_version" >
+                  This function was added in version <b><span jscontent="$this.min_version"></span></b>.
+                  If you require this function, the manifest key
+                  <a href="manifest.html#minimum_chrome_version">minimum_chrome_version</a>
+                  can ensure that your extension won't be run in an earlier browser version.
+                </p>
               </div> <!-- /description -->
 
             </div>  <!-- /apiItem -->