DevTools: Make sure UISC content is up-to-date when running performSearchInContent()

Source/devtools/front_end/UISourceCode.js

Index: Source/devtools/front_end/UISourceCode.js
diff --git a/Source/devtools/front_end/UISourceCode.js b/Source/devtools/front_end/UISourceCode.js
index cf07f0b58f762dd85a315565698ee9922fe0bdbd..b9160e1ac1046b32e246d8e4e8ebe2fb374d285a 100644
--- a/Source/devtools/front_end/UISourceCode.js
+++ b/Source/devtools/front_end/UISourceCode.js
@@ -266,10 +266,15 @@ WebInspector.UISourceCode.prototype = {
      */
     checkContentUpdated: function(callback)
     {
-        if (!this._project.canSetFileContent())
+        callback = callback || function() {};
+        if (!this._project.canSetFileContent()) {
+            callback();
             return;
-        if (this._checkingContent)
+        }
+        if (this._checkingContent) {
+            callback();
             return;
+        }
         this._checkingContent = true;
         this._project.requestFileContent(this, contentLoaded.bind(this));
 
@@ -284,29 +289,25 @@ WebInspector.UISourceCode.prototype = {
                 this._commitContent("", false);
                 this.setWorkingCopy(workingCopy);
                 delete this._checkingContent;
-                if (callback)
-                    callback();
+                callback();
                 return;
             }
             if (typeof this._lastAcceptedContent === "string" && this._lastAcceptedContent === updatedContent) {
                 delete this._checkingContent;
-                if (callback)
-                    callback();
+                callback();
                 return;
             }
             if (this._content === updatedContent) {
                 delete this._lastAcceptedContent;
                 delete this._checkingContent;
-                if (callback)
-                    callback();
+                callback();
                 return;
             }
 
             if (!this.isDirty()) {
                 this._commitContent(updatedContent, false);
                 delete this._checkingContent;
-                if (callback)
-                    callback();
+                callback();
                 return;
             }
 
@@ -316,8 +317,7 @@ WebInspector.UISourceCode.prototype = {
             else
                 this._lastAcceptedContent = updatedContent;
             delete this._checkingContent;
-            if (callback)
-                callback();
+            callback();
         }
     },