DevTools: Introduce module initializers

Source/devtools/front_end/sources/SourcesPanel.js

Index: Source/devtools/front_end/sources/SourcesPanel.js
diff --git a/Source/devtools/front_end/sources/SourcesPanel.js b/Source/devtools/front_end/sources/SourcesPanel.js
index c84ac4472133ca52bce5ba4fe069491568d6c6d6..2283e6fa72cfc81a94c34ed13432f9d07d194983 100644
--- a/Source/devtools/front_end/sources/SourcesPanel.js
+++ b/Source/devtools/front_end/sources/SourcesPanel.js
@@ -24,36 +24,6 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-importScript("jsdifflib.js")
-importScript("Placard.js");
-importScript("AddSourceMapURLDialog.js");
-importScript("BreakpointsSidebarPane.js");
-importScript("CallStackSidebarPane.js");
-importScript("SimpleHistoryManager.js");
-importScript("EditingLocationHistoryManager.js");
-importScript("FilePathScoreFunction.js");
-importScript("FilteredItemSelectionDialog.js");
-importScript("UISourceCodeFrame.js");
-importScript("JavaScriptSourceFrame.js");
-importScript("CSSSourceFrame.js");
-importScript("NavigatorView.js");
-importScript("RevisionHistoryView.js");
-importScript("ScopeChainSidebarPane.js");
-importScript("SourcesNavigator.js");
-importScript("StyleSheetOutlineDialog.js");
-importScript("TabbedEditorContainer.js");
-importScript("WatchExpressionsSidebarPane.js");
-importScript("WorkersSidebarPane.js");
-importScript("ScriptFormatterEditorAction.js");
-importScript("InplaceFormatterEditorAction.js");
-importScript("ScriptFormatter.js");
-importScript("SourcesView.js");
-
-// Search results pane
-importScript("AdvancedSearchView.js");
-importScript("FileBasedSearchResultsPane.js");
-importScript("SourcesSearchScope.js");
-
 /**
  * @constructor
  * @implements {WebInspector.ContextMenu.Provider}