ui/base/dragdrop: Fix warnings found by clang chromium-style plugin on Windows.

http://build.chromium.org/p/chromium.fyi/builders/CrWinClang/builds/622/steps/compile/logs/stdio

This fixes the following kind or warnings:

warning(clang): [chromium-style] Complex constructor has an inlined body.
warning(clang): [chromium-style] Complex destructor has an inline body.

BUG=467287
R=thakis@chromium.org,sky@chromium.org

Review URL: https://codereview.chromium.org/1103323004

Cr-Commit-Position: refs/heads/master@{#327296}

ui/base/dragdrop/os_exchange_data_provider_win.cc

@@ -626,6 +626,20 @@ static void DuplicateMedium(CLIPFORMAT source_clipformat,
     destination->pUnkForRelease->AddRef();
 }
 
+DataObjectImpl::StoredDataInfo::StoredDataInfo(const FORMATETC& format_etc,
+                                               STGMEDIUM* medium)
+    : format_etc(format_etc), medium(medium), owns_medium(true) {
+}
+
+DataObjectImpl::StoredDataInfo::~StoredDataInfo() {
+  if (owns_medium) {
+    ReleaseStgMedium(medium);
+    delete medium;
+  }
+  if (downloader.get())
+    downloader->Stop();
+}
+
 DataObjectImpl::DataObjectImpl()
     : is_aborting_(false),
       in_drag_loop_(false),

ui/base/dragdrop/os_exchange_data_provider_win.h

@@ -104,17 +104,8 @@ class DataObjectImpl : public DownloadFileObserver,
     bool owns_medium;
     scoped_refptr<DownloadFileProvider> downloader;
 
-    StoredDataInfo(const FORMATETC& format_etc, STGMEDIUM* medium)
-        : format_etc(format_etc), medium(medium), owns_medium(true) {}
-
-    ~StoredDataInfo() {
-      if (owns_medium) {
-        ReleaseStgMedium(medium);
-        delete medium;
-      }
-      if (downloader.get())
-        downloader->Stop();
-    }
+    StoredDataInfo(const FORMATETC& format_etc, STGMEDIUM* medium);
+    ~StoredDataInfo();
   };
 
   typedef ScopedVector<StoredDataInfo> StoredData;