[Android] Add a transparent Activity in Chrome to handle Browser Action Intent

chrome/android/java/res/values-v17/styles.xml

Index: chrome/android/java/res/values-v17/styles.xml
diff --git a/chrome/android/java/res/values-v17/styles.xml b/chrome/android/java/res/values-v17/styles.xml
index e21804f008bf4221f0bb7eefc4ecfaf59dc6ffb8..02c215b4b8a8f0df25197eca76a574e45a4a0b07 100644
--- a/chrome/android/java/res/values-v17/styles.xml
+++ b/chrome/android/java/res/values-v17/styles.xml
@@ -59,6 +59,15 @@
         <item name="windowNoTitle">true</item>
     </style>
 
+    <style name="FullscreenTransparentActivityTheme" parent="Theme.AppCompat.Light.NoActionBar" >
+        <item name="android:windowBackground">@android:color/transparent</item>
+        <item name="android:windowContentOverlay">@null</item>
+        <item name="android:windowIsFloating">true</item>
+        <item name="android:colorBackgroundCacheHint">@null</item>
+        <item name="android:windowIsTranslucent">true</item>
+        <item name="windowNoTitle">true</item>
+    </style>
+
     <style name="FullscreenWhiteActivityTheme" parent="FullscreenWhite">
         <item name="windowActionBar">false</item>
     </style>