Push one function from the Mac drag/drop util code to ui/.

chrome/browser/ui/cocoa/drag_util.mm

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "chrome/browser/ui/cocoa/drag_util.h"
 
-#include "base/basictypes.h"
-#include "base/logging.h"
-#include "base/sys_string_conversions.h"
+#include "base/file_path.h"
 #include "chrome/browser/profiles/profile.h"
 #include "content/browser/plugin_service.h"
 #include "content/public/common/url_constants.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/mime_util.h"
 #include "net/base/net_util.h"
 #import "third_party/mozilla/NSPasteboard+Utils.h"
-#include "webkit/plugins/npapi/plugin_list.h"
+#import "ui/base/dragdrop/cocoa_dnd_util.h"
 
 namespace drag_util {
 
-BOOL PopulateURLAndTitleFromPasteBoard(GURL* url,
-                                       string16* title,
-                                       NSPasteboard* pboard,
-                                       BOOL convert_filenames) {
-  CHECK(url);
+namespace {
 
-  // Bail out early if there's no URL data.
-  if (![pboard containsURLData])
-    return NO;
-
-  // -getURLs:andTitles:convertingFilenames: will already validate URIs so we
-  // don't need to again. The arrays returned are both of NSStrings.
-  NSArray* url_array = nil;
-  NSArray* title_array = nil;
-  [pboard getURLs:&url_array andTitles:&title_array
-      convertingFilenames:convert_filenames];
-  DCHECK_EQ([url_array count], [title_array count]);
-  // It's possible that no URLs were actually provided!
-  if (![url_array count])
-    return NO;
-  NSString* url_string = [url_array objectAtIndex:0];
-  if ([url_string length]) {
-    // Check again just to make sure to not assign NULL into a std::string,
-    // which throws an exception.
-    const char* utf8_url = [url_string UTF8String];
-    if (utf8_url) {
-      *url = GURL(utf8_url);
-      // Extra paranoia check.
-      if (title && [title_array count])
-        *title = base::SysNSStringToUTF16([title_array objectAtIndex:0]);
-    }
-  }
-  return YES;
-}
-
-GURL GetFileURLFromDropData(id<NSDraggingInfo> info) {
-  if ([[info draggingPasteboard] containsURLData]) {
-    GURL url;
-    PopulateURLAndTitleFromPasteBoard(&url,
-                                      NULL,
-                                      [info draggingPasteboard],
-                                      YES);
-
-    if (url.SchemeIs(chrome::kFileScheme))
-      return url;
-  }
-  return GURL();
-}
-
-static BOOL IsSupportedFileURL(Profile* profile, const GURL& url) {
+BOOL IsSupportedFileURL(Profile* profile, const GURL& url) {
   FilePath full_path;
   net::FileURLToFilePath(url, &full_path);
 
   std::string mime_type;
   net::GetMimeTypeFromFile(full_path, &mime_type);
 
   // This logic mirrors |BufferedResourceHandler::ShouldDownload()|.
   // TODO(asvitkine): Refactor this out to a common location instead of
   //                  duplicating code.
   if (net::IsSupportedMimeType(mime_type))
     return YES;
 
   // Check whether there is a plugin that supports the mime type. (e.g. PDF)
   // TODO(bauerb): This possibly uses stale information, but it's guaranteed not
   // to do disk access.
   bool allow_wildcard = false;
   webkit::WebPluginInfo plugin;
   return PluginService::GetInstance()->GetPluginInfo(
       -1,                // process ID
       MSG_ROUTING_NONE,  // routing ID
       profile->GetResourceContext(),
       url, GURL(), mime_type, allow_wildcard,
       NULL, &plugin, NULL);
 }
 
+}  // namespace
+
+GURL GetFileURLFromDropData(id<NSDraggingInfo> info) {
+  if ([[info draggingPasteboard] containsURLData]) {
+    GURL url;
+    ui::PopulateURLAndTitleFromPasteboard(&url,
+                                          NULL,
+                                          [info draggingPasteboard],
+                                          YES);
+
+    if (url.SchemeIs(chrome::kFileScheme))
+      return url;
+  }
+  return GURL();
+}
+
 BOOL IsUnsupportedDropData(Profile* profile, id<NSDraggingInfo> info) {
   GURL url = GetFileURLFromDropData(info);
   if (!url.is_empty()) {
     // If dragging a file, only allow dropping supported file types (that the
     // web view can display).
     return !IsSupportedFileURL(profile, url);
   }
   return NO;
 }
 
 }  // namespace drag_util