Cleanup: Remove some redundant container clear() calls.

content/browser/download/download_item_impl_unittest.cc

Index: content/browser/download/download_item_impl_unittest.cc
diff --git a/content/browser/download/download_item_impl_unittest.cc b/content/browser/download/download_item_impl_unittest.cc
index acbc55e2ef896167a89a4782e4ed2f0c8e14f299..786d90311049b1fac20367975848dbc48aed379b 100644
--- a/content/browser/download/download_item_impl_unittest.cc
+++ b/content/browser/download/download_item_impl_unittest.cc
@@ -53,7 +53,7 @@ class MockDelegate : public DownloadItemImplDelegate {
   MOCK_METHOD1(ShouldOpenFileBasedOnExtension, bool(const base::FilePath&));
   MOCK_METHOD1(CheckForFileRemoval, void(DownloadItemImpl*));
 
-  virtual void ResumeInterruptedDownload(
+  void ResumeInterruptedDownload(
       scoped_ptr<DownloadUrlParameters> params, uint32 id) override {
     MockResumeInterruptedDownload(params.get(), id);
   }
@@ -207,7 +207,6 @@ class DownloadItemTest : public testing::Test {
   virtual void TearDown() {
     ui_thread_.DeprecatedGetThreadObject()->message_loop()->RunUntilIdle();
     STLDeleteElements(&allocated_downloads_);
-    allocated_downloads_.clear();
   }
 
   // This class keeps ownership of the created download item; it will