Use customized RGBA-enabled tooltip window for tooltip on ChroemOS

- Add a TooltipWindowGtk which uses RGBA colormap and has a label;
- Use TooltipWindowGtk for tooltip for both WidgetGtk and
  RenderWidgetHostViewGtk

After this change, we will get back shadow and rounded corner for tooltip
in theme engine.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/1708015

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@45854 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 28 insertions, 0 deletions

diff --git a/chrome/browser/renderer_host/render_widget_host_view_gtk.cc b/chrome/browser/renderer_host/render_widget_host_view_gtk.cc
index 403480b..f0ec3a5 100644
--- a/chrome/browser/renderer_host/render_widget_host_view_gtk.cc
+++ b/chrome/browser/renderer_host/render_widget_host_view_gtk.cc
@@ -39,6 +39,10 @@
 #include "third_party/WebKit/WebKit/chromium/public/gtk/WebInputEventFactory.h"
 #include "webkit/glue/webcursor_gtk_data.h"
 
+#if defined(OS_CHROMEOS)
+#include "views/widget/tooltip_window_gtk.h"
+#endif  // defined(OS_CHROMEOS)
+
 static const int kMaxWindowWidth = 4000;
 static const int kMaxWindowHeight = 4000;
 
@@ -349,6 +353,11 @@ void RenderWidgetHostViewGtk::InitAsChild() {
   // |key_bindings_handler_| must be created after creating |view_| widget.
   key_bindings_handler_.reset(new GtkKeyBindingsHandler(view_.get()));
   plugin_container_manager_.set_host_widget(view_.get());
+
+#if defined(OS_CHROMEOS)
+  tooltip_window_.reset(new views::TooltipWindowGtk(view_.get()));
+#endif  // defined(OS_CHROMEOS)
+
   gtk_widget_show(view_.get());
 }
 
@@ -363,6 +372,11 @@ void RenderWidgetHostViewGtk::InitAsPopup(
   // |key_bindings_handler_| must be created after creating |view_| widget.
   key_bindings_handler_.reset(new GtkKeyBindingsHandler(view_.get()));
   plugin_container_manager_.set_host_widget(view_.get());
+
+#if defined(OS_CHROMEOS)
+  tooltip_window_.reset(new views::TooltipWindowGtk(view_.get()));
+#endif  // defined(OS_CHROMEOS)
+
   gtk_container_add(GTK_CONTAINER(popup), view_.get());
 
   // If we are not activatable, we don't want to grab keyboard input,
@@ -608,6 +622,9 @@ void RenderWidgetHostViewGtk::SetTooltipText(const std::wstring& tooltip_text) {
   } else {
     gtk_widget_set_tooltip_text(view_.get(),
                                 WideToUTF8(clamped_tooltip).c_str());
+#if defined(OS_CHROMEOS)
+    tooltip_window_->SetTooltipText(clamped_tooltip);
+#endif  // defined(OS_CHROMEOS)
   }
 }
 
diff --git a/chrome/browser/renderer_host/render_widget_host_view_gtk.h b/chrome/browser/renderer_host/render_widget_host_view_gtk.h
index e5939b5..3f9d90d 100644
--- a/chrome/browser/renderer_host/render_widget_host_view_gtk.h
+++ b/chrome/browser/renderer_host/render_widget_host_view_gtk.h
@@ -26,6 +26,12 @@ class GtkKeyBindingsHandler;
 class MenuGtk;
 struct NativeWebKeyboardEvent;
 
+#if defined(OS_CHROMEOS)
+namespace views {
+class TooltipWindowGtk;
+}
+#endif  // defined(OS_CHROMEOS)
+
 typedef struct _GtkClipboard GtkClipboard;
 typedef struct _GtkSelectionData GtkSelectionData;
 
@@ -179,6 +185,11 @@ class RenderWidgetHostViewGtk : public RenderWidgetHostView {
   // The size that we want the renderer to be.  We keep this in a separate
   // variable because resizing in GTK+ is async.
   gfx::Size requested_size_;
+
+#if defined(OS_CHROMEOS)
+  // Custimized tooltip window.
+  scoped_ptr<views::TooltipWindowGtk> tooltip_window_;
+#endif  // defined(OS_CHROMEOS)
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_GTK_H_