Cleanup Bookmarks, History, and SavedPages screen

- Redesigned bookmark thumbnail view
- Custom ImageView to scale the thumbnail properly
- Fix column count in bookmark expandable view
- Disable GroupView if we have only one account in bookmark

Change-Id: I2fccae50b9e96c909744bd5c7d0af7b373136c54
diff --git a/res/values/dimensions.xml b/res/values/dimensions.xml
index 6741b26..cf6b60a 100755
--- a/res/values/dimensions.xml
+++ b/res/values/dimensions.xml
@@ -19,8 +19,8 @@
     <dimen name="tab_slice">15.5dp</dimen>
     <dimen name="tab_focus_stroke">2dip</dimen>
     <dimen name="max_tab_width">300dp</dimen>
-    <dimen name="bookmarkThumbnailWidth">90dip</dimen>
-    <dimen name="bookmarkThumbnailHeight">80dip</dimen>
+    <dimen name="bookmarkThumbnailWidth">130dip</dimen>
+    <dimen name="bookmarkThumbnailHeight">65dip</dimen>
     <!--Add for Navigation Feature -->
     <dimen name="mynav_item_width">80px</dimen>
     <dimen name="mynav_item_width_portrait">80px</dimen>
@@ -49,7 +49,11 @@
     <dimen name="widgetColumnWidth">80dip</dimen>
     <!-- For the combined Bookmarks History view -->
     <dimen name="combo_paddingTop">0dip</dimen>
+    <dimen name="combo_snapshot_paddingTop">0dip</dimen>
     <dimen name="combo_horizontalSpacing">6dip</dimen>
+    <dimen name="combo_bookmark_thumbnail_margin">4dip</dimen>
+    <dimen name="combo_snapshot_item_padding">12dip</dimen>
+    <dimen name="combo_shadow_height">8dip</dimen>
     <dimen name="tab_view_thumbnail_height">76dip</dimen>
     <!-- Preference activity side margins -->
     <dimen name="preference_screen_side_margin">0dp</dimen>