webapps: initial addition of splash screen icon downloading

chrome/android/java/res/values/dimens.xml

Index: chrome/android/java/res/values/dimens.xml
diff --git a/chrome/android/java/res/values/dimens.xml b/chrome/android/java/res/values/dimens.xml
index 5697e754d58a4dadfdb79c16a8799a70ff8ad100..4c10c6489f75acf1a81bf703012f1ea7c08e3669 100644
--- a/chrome/android/java/res/values/dimens.xml
+++ b/chrome/android/java/res/values/dimens.xml
@@ -160,7 +160,7 @@
     <!-- Cast related constants -->
     <dimen name="remote_notification_logo_max_width">@android:dimen/notification_large_icon_width</dimen>
     <dimen name="remote_notification_logo_max_height">64dp</dimen>
-    
+
     <!-- Alert dialog -->
     <dimen name="dialog_padding_top">@dimen/abc_dialog_padding_top_material</dimen>
     <dimen name="dialog_padding_sides">@dimen/abc_dialog_padding_material</dimen>
@@ -196,6 +196,9 @@
     <dimen name="find_in_page_popup_height">60dp</dimen>
     <dimen name="find_in_page_popup_margin_end">62dp</dimen>
 
+    <!-- WebApp dimensions -->

[gone, 2015/08/24 18:43:13]

nit: webapp or web app or Web app are all used everywhere.  Camel-casing is
right out.

[Lalit Maganti, 2015/08/25 11:38:44]

This was one of my first edits to the Chrome codebase and I've been
stashing/stash popping it since then :P

Fixed.

+    <dimen name="webapp_splash_icon_size">128dp</dimen>
+
     <!-- Toolbar dimensions -->
     <dimen name="toolbar_tab_count_text_size_1_digit">12dp</dimen>
     <dimen name="toolbar_tab_count_text_size_2_digit">10dp</dimen>