bookmarks: Move bookmark_pasteboard_helper_mac functions into 'bookmarks' namespace.

BUG=370433
TEST=unit_tests, components_unittests
R=avi@chromium.org

Review URL: https://codereview.chromium.org/814833007

Cr-Commit-Position: refs/heads/master@{#309417}

chrome/browser/ui/cocoa/bookmarks/bookmark_bar_folder_view.mm

@@ -57,7 +57,7 @@ using base::UserMetricsAction;
   if (![[self controller] draggingAllowed:info])
     return NSDragOperationNone;
   if ([[info draggingPasteboard] dataForType:kBookmarkButtonDragType] ||
-      PasteboardContainsBookmarks(ui::CLIPBOARD_TYPE_DRAG) ||
+      bookmarks::PasteboardContainsBookmarks(ui::CLIPBOARD_TYPE_DRAG) ||
       [[info draggingPasteboard] containsURLData]) {
     // Find the position of the drop indicator.
     BOOL showIt = [[self controller]

chrome/browser/ui/cocoa/bookmarks/bookmark_bar_view_cocoa.mm

@@ -127,7 +127,7 @@ using base::UserMetricsAction;
   if (![controller_ draggingAllowed:info])
     return NSDragOperationNone;
   if ([[info draggingPasteboard] dataForType:kBookmarkButtonDragType] ||
-      PasteboardContainsBookmarks(ui::CLIPBOARD_TYPE_DRAG) ||
+      bookmarks::PasteboardContainsBookmarks(ui::CLIPBOARD_TYPE_DRAG) ||
       [[info draggingPasteboard] containsURLData]) {
     // We only show the drop indicator if we're not in a position to
     // perform a hover-open since it doesn't make sense to do both.

components/bookmarks/browser/bookmark_pasteboard_helper_mac.h

@@ -15,25 +15,29 @@ namespace base {
 class FilePath;
 }
 
+namespace bookmarks {
+
 // This set of functions lets C++ code interact with the cocoa pasteboard and
 // dragging methods.
 
 // Writes a set of bookmark elements from a profile to the specified pasteboard.
 void WriteBookmarksToPasteboard(
     ui::ClipboardType type,
-    const std::vector<bookmarks::BookmarkNodeData::Element>& elements,
+    const std::vector<BookmarkNodeData::Element>& elements,
     const base::FilePath& profile_path);
 
 // Reads a set of bookmark elements from the specified pasteboard.
 bool ReadBookmarksFromPasteboard(
     ui::ClipboardType type,
-    std::vector<bookmarks::BookmarkNodeData::Element>& elements,
+    std::vector<BookmarkNodeData::Element>& elements,
     base::FilePath* profile_path);
 
 // Returns true if the specified pasteboard contains any sort of bookmark
 // elements. It currently does not consider a plaintext url a valid bookmark.
 bool PasteboardContainsBookmarks(ui::ClipboardType type);
 
+}  // namespace bookmarks
+
 #if defined(__OBJC__)
 // Pasteboard type for dictionary containing bookmark structure consisting
 // of individual bookmark nodes and/or bookmark folders.

components/bookmarks/browser/bookmark_pasteboard_helper_mac.mm

@@ -11,11 +11,11 @@
 #include "components/bookmarks/browser/bookmark_node.h"
 #include "ui/base/clipboard/clipboard.h"
 
-using bookmarks::BookmarkNodeData;
-
 NSString* const kBookmarkDictionaryListPboardType =
     @"BookmarkDictionaryListPboardType";
 
+namespace bookmarks {
+
 namespace {
 
 // An unofficial standard pasteboard title type to be provided alongside the
@@ -331,3 +331,5 @@ bool PasteboardContainsBookmarks(ui::ClipboardType type) {
                                 nil];
   return [pb availableTypeFromArray:availableTypes] != nil;
 }
+
+}  // namespace bookmarks