content: Split web_drag_dest_gtk.cc into chrome/ and content/ parts.

chrome/browser/ui/views/tab_contents/native_tab_contents_view_gtk.cc

 // 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.
 
 #include "chrome/browser/ui/views/tab_contents/native_tab_contents_view_gtk.h"
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/tab_contents/web_drag_dest_gtk.h"
 #include "chrome/browser/ui/gtk/constrained_window_gtk.h"
 #include "chrome/browser/ui/gtk/tab_contents_drag_source.h"
+#include "chrome/browser/tab_contents/web_drag_bookmark_handler_gtk.h"
 #include "chrome/browser/ui/views/tab_contents/native_tab_contents_view_delegate.h"
 #include "chrome/browser/ui/views/tab_contents/native_tab_contents_view_views.h"
 #include "content/browser/renderer_host/render_widget_host_view_gtk.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "content/browser/tab_contents/tab_contents_view.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDragData.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/login/user_manager.h"
@@ skipping 35 matching lines @@
     }
     if (event->direction == GDK_SCROLL_UP) {
       delegate->OnNativeTabContentsViewWheelZoom(true);
       return TRUE;
     }
   }
 
   return FALSE;
 }
 
+// Our dragging needs to use views datatypes instead of the default GTK ones.
+class WebDragBookmarkHandlerViewGtk : public WebDragBookmarkHandlerGtk {
+ public:
+  virtual GdkAtom GetBookmarkTargetAtom() const {
+    // For Views, bookmark drag data is encoded in the same format, and
+    // associated with a custom format. See BookmarkNodeData::Write() for
+    // details.
+    return BookmarkNodeData::GetBookmarkCustomFormat();
+  }
+};
+
 }  // namespace
 
 ////////////////////////////////////////////////////////////////////////////////
 // NativeTabContentsViewGtk, public:
 
 NativeTabContentsViewGtk::NativeTabContentsViewGtk(
     internal::NativeTabContentsViewDelegate* delegate)
     : views::NativeWidgetGtk(delegate->AsNativeWidgetDelegate()),
       delegate_(delegate),
       ignore_next_char_event_(false),
@@ skipping 52 matching lines @@
   view->InitAsChild();
   g_signal_connect(view->native_view(), "focus",
                    G_CALLBACK(OnFocus), delegate_->GetTabContents());
   g_signal_connect(view->native_view(), "scroll-event",
                    G_CALLBACK(OnMouseScroll), delegate_);
 
   // Let widget know that the tab contents has been painted.
   views::NativeWidgetGtk::RegisterChildExposeHandler(view->native_view());
 
   // Renderer target DnD.
-  if (delegate_->GetTabContents()->ShouldAcceptDragAndDrop())
+  if (delegate_->GetTabContents()->ShouldAcceptDragAndDrop()) {
     drag_dest_.reset(new WebDragDestGtk(delegate_->GetTabContents(),
                                         view->native_view()));
+    bookmark_handler_gtk_.reset(new WebDragBookmarkHandlerGtk);
+    drag_dest_->set_delegate(bookmark_handler_gtk_.get());
+  }
 
   gtk_fixed_put(GTK_FIXED(GetWidget()->GetNativeView()), view->native_view(), 0,
                 0);
   return view;
 }
 
 gfx::NativeWindow NativeTabContentsViewGtk::GetTopLevelNativeWindow() const {
   GtkWidget* window = gtk_widget_get_ancestor(GetWidget()->GetNativeView(),
                                               GTK_TYPE_WINDOW);
   return window ? GTK_WINDOW(window) : NULL;
@@ skipping 119 matching lines @@
 ////////////////////////////////////////////////////////////////////////////////
 // NativeTabContentsView, public:
 
 // static
 NativeTabContentsView* NativeTabContentsView::CreateNativeTabContentsView(
     internal::NativeTabContentsViewDelegate* delegate) {
   if (views::Widget::IsPureViews())
     return new NativeTabContentsViewViews(delegate);
   return new NativeTabContentsViewGtk(delegate);
 }