DevTools: bring back exception handling in URL decoding

The exception handling was added in r177449, but then was accidentally
removed via r183686. This patch brings the test and functionality back.

R=vsevik

Review URL: https://codereview.chromium.org/661983003

git-svn-id: svn://svn.chromium.org/blink/trunk@183901 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/LayoutTests/inspector/sources/debugger/navigator-view-expected.txt

@@ -109,7 +109,7 @@ Revealing all resources:
       path with spaces
         white space.html
       the%2fdir
-        foo?bar=100%&baz=a %2fb
+        foo?bar=100%&baz=a%20%2fb
         foo?bar=100&baz=a %2fb
       (index)
       ?a=b

third_party/WebKit/LayoutTests/inspector/sources/debugger/navigator-view.html

@@ -65,7 +65,8 @@ function test()
     addUISourceCode("http://example.com/", false);
     addUISourceCode("http://example.com/?a=b", false);
     addUISourceCode("http://example.com/the%2fdir/foo?bar=100&baz=a%20%2fb", false);
-    addUISourceCode("http://example.com/the%2fdir/foo?bar=100%25&baz=a%20%2fb", false);
+    // Verify that adding invalid URL does not throw exception.
+    addUISourceCode("http://example.com/the%2fdir/foo?bar=100%&baz=a%20%2fb", false);
     addUISourceCode("http://example.com/path%20with%20spaces/white%20space.html", false);
     addUISourceCode("?a=b", false);
     addUISourceCode("very_looooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooong_url", false);

third_party/WebKit/Source/devtools/front_end/bindings/NetworkWorkspaceBinding.js

@@ -138,13 +138,7 @@ WebInspector.NetworkWorkspaceBinding.prototype = {
         var splitURL = WebInspector.ParsedURL.splitURLIntoPathComponents(url);
         var projectName = splitURL[0];
         var parentPath = splitURL.slice(1, -1).join("/");
-        try {
-            parentPath = parentPath;
-        } catch (e) { }
         var name = splitURL.peekLast() || "";
-        try {
-            name = name;
-        } catch (e) { }
         var projectDelegate = this._projectDelegate(projectName, isContentScript || false);
         var path = projectDelegate.addFile(parentPath, name, url, contentProvider);
         var uiSourceCode = /** @type {!WebInspector.UISourceCode} */ (this._workspace.uiSourceCode(projectDelegate.id(), path));

third_party/WebKit/Source/devtools/front_end/common/ParsedURL.js

@@ -92,7 +92,11 @@ WebInspector.ParsedURL = function(url)
  */
 WebInspector.ParsedURL.splitURLIntoPathComponents = function(url)
 {
-    var parsedURL = new WebInspector.ParsedURL(decodeURI(url));
+    var decodedURL = url;
+    try {
+        decodedURL = decodeURI(url);
+    } catch (e) { }
+    var parsedURL = new WebInspector.ParsedURL(decodedURL);
     var origin;
     var folderPath;
     var name;