diff --git a/api/current.txt b/api/current.txt
index b0e8ef04..ed38885 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -3159,6 +3159,7 @@
     method public abstract deprecated void addTab(android.app.ActionBar.Tab, int, boolean);
     method public abstract android.view.View getCustomView();
     method public abstract int getDisplayOptions();
+    method public float getElevation();
     method public abstract int getHeight();
     method public int getHideOffset();
     method public abstract deprecated int getNavigationItemCount();
@@ -3190,6 +3191,7 @@
     method public abstract void setDisplayShowHomeEnabled(boolean);
     method public abstract void setDisplayShowTitleEnabled(boolean);
     method public abstract void setDisplayUseLogoEnabled(boolean);
+    method public void setElevation(float);
     method public void setHideOffset(int);
     method public void setHideOnContentScrollEnabled(boolean);
     method public void setHomeActionContentDescription(java.lang.CharSequence);
diff --git a/core/java/android/app/ActionBar.java b/core/java/android/app/ActionBar.java
index 5c98180..b74c824 100644
--- a/core/java/android/app/ActionBar.java
+++ b/core/java/android/app/ActionBar.java
@@ -993,6 +993,33 @@
         }
     }
 
+    /**
+     * Set the Z-axis elevation of the action bar in pixels.
+     *
+     * <p>The action bar's elevation is the distance it is placed from its parent surface. Higher
+     * values are closer to the user.</p>
+     *
+     * @param elevation Elevation value in pixels
+     */
+    public void setElevation(float elevation) {
+        if (elevation != 0) {
+            throw new UnsupportedOperationException("Setting a non-zero elevation is " +
+                    "not supported in this action bar configuration.");
+        }
+    }
+
+    /**
+     * Get the Z-axis elevation of the action bar in pixels.
+     *
+     * <p>The action bar's elevation is the distance it is placed from its parent surface. Higher
+     * values are closer to the user.</p>
+     *
+     * @return Elevation value in pixels
+     */
+    public float getElevation() {
+        return 0;
+    }
+
     /** @hide */
     public void setDefaultDisplayHomeAsUpEnabled(boolean enabled) {
     }
diff --git a/core/java/com/android/internal/app/ToolbarActionBar.java b/core/java/com/android/internal/app/ToolbarActionBar.java
index e8a3f0a..7af52f3 100644
--- a/core/java/com/android/internal/app/ToolbarActionBar.java
+++ b/core/java/com/android/internal/app/ToolbarActionBar.java
@@ -122,6 +122,16 @@
     }
 
     @Override
+    public void setElevation(float elevation) {
+        mToolbar.setElevation(elevation);
+    }
+
+    @Override
+    public float getElevation() {
+        return mToolbar.getElevation();
+    }
+
+    @Override
     public Context getThemedContext() {
         return mToolbar.getContext();
     }
diff --git a/core/java/com/android/internal/app/WindowDecorActionBar.java b/core/java/com/android/internal/app/WindowDecorActionBar.java
index 7bd316f..b5ff0cc 100644
--- a/core/java/com/android/internal/app/WindowDecorActionBar.java
+++ b/core/java/com/android/internal/app/WindowDecorActionBar.java
@@ -222,6 +222,10 @@
         if (a.getBoolean(R.styleable.ActionBar_hideOnContentScroll, false)) {
             setHideOnContentScrollEnabled(true);
         }
+        final int elevation = a.getDimensionPixelSize(R.styleable.ActionBar_elevation, 0);
+        if (elevation != 0) {
+            setElevation(elevation);
+        }
         a.recycle();
     }
 
@@ -236,6 +240,19 @@
         }
     }
 
+    @Override
+    public void setElevation(float elevation) {
+        mContainerView.setElevation(elevation);
+        if (mSplitView != null) {
+            mSplitView.setElevation(elevation);
+        }
+    }
+
+    @Override
+    public float getElevation() {
+        return mContainerView.getElevation();
+    }
+
     public void onConfigurationChanged(Configuration newConfig) {
         setHasEmbeddedTabs(ActionBarPolicy.get(mContext).hasEmbeddedTabs());
     }
diff --git a/core/res/res/values/attrs.xml b/core/res/res/values/attrs.xml
index a4bd526..b4a4098 100644
--- a/core/res/res/values/attrs.xml
+++ b/core/res/res/values/attrs.xml
@@ -6783,10 +6783,20 @@
         <attr name="itemPadding" format="dimension" />
         <!-- Set true to hide the action bar on a vertical nested scroll of content. -->
         <attr name="hideOnContentScroll" format="boolean" />
+        <!-- Minimum inset for content views within a bar. Navigation buttons and
+             menu views are excepted. Only valid for some themes and configurations. -->
         <attr name="contentInsetStart" format="dimension" />
+        <!-- Minimum inset for content views within a bar. Navigation buttons and
+             menu views are excepted. Only valid for some themes and configurations. -->
         <attr name="contentInsetEnd" format="dimension" />
+        <!-- Minimum inset for content views within a bar. Navigation buttons and
+             menu views are excepted. Only valid for some themes and configurations. -->
         <attr name="contentInsetLeft" format="dimension" />
+        <!-- Minimum inset for content views within a bar. Navigation buttons and
+             menu views are excepted. Only valid for some themes and configurations. -->
         <attr name="contentInsetRight" format="dimension" />
+        <!-- Elevation for the action bar itself -->
+        <attr name="elevation" />
     </declare-styleable>
 
     <declare-styleable name="ActionMode">
diff --git a/core/res/res/values/styles_material.xml b/core/res/res/values/styles_material.xml
index 3880fb3..4623258 100644
--- a/core/res/res/values/styles_material.xml
+++ b/core/res/res/values/styles_material.xml
@@ -804,6 +804,7 @@
         <item name="homeLayout">@layout/action_bar_home_material</item>
         <item name="gravity">center_vertical</item>
         <item name="contentInsetStart">16dp</item>
+        <item name="elevation">8dp</item>
     </style>
 
     <style name="Widget.Material.ActionBar.Solid">
diff --git a/core/res/res/values/themes_material.xml b/core/res/res/values/themes_material.xml
index 610c8b8..47f3778 100644
--- a/core/res/res/values/themes_material.xml
+++ b/core/res/res/values/themes_material.xml
@@ -499,7 +499,7 @@
         <item name="windowFullscreen">false</item>
         <item name="windowOverscan">false</item>
         <item name="windowIsFloating">false</item>
-        <item name="windowContentOverlay">@drawable/ab_solid_shadow_material</item>
+        <item name="windowContentOverlay">@null</item>
         <item name="windowShowWallpaper">false</item>
         <item name="windowTitleStyle">@style/WindowTitle.Material</item>
         <item name="windowTitleSize">@dimen/action_bar_default_height_material</item>