[Contextual Search] Add support for crushed sprites and animate the search provider icon

build/android/lint/suppressions.xml

 <?xml version="1.0" encoding="utf-8"?>
 <lint>
   <!--
 STOP! It looks like you want to suppress some lint errors:
 - Have you tried identifing the offending patch?
   Ask the author for a fix and/or revert the patch.
 - It is preferred to add suppressions in the code instead of
   sweeping it under the rug here. See:
 
     http://developer.android.com/tools/debugging/improving-w-lint.html
@@ skipping 33 matching lines @@
   <issue id="IconDensities">
     <!-- crbug.com/457918 is tracking missing assets -->
     <ignore path="components/web_contents_delegate_android/android/java/res/drawable-xxhdpi"/>
     <ignore path="components/web_contents_delegate_android/android/java/res/drawable-xxxhdpi"/>
     <ignore path="content/public/android/java/res/drawable-xxhdpi"/>
     <ignore path="content/public/android/java/res/drawable-xxxhdpi"/>
     <ignore path="chrome/android/java/res/drawable-xxhdpi"/>
     <ignore path="chrome/android/java/res/drawable-xxxhdpi"/>
     <ignore path="ui/android/java/res/drawable-xxhdpi"/>
     <ignore path="ui/android/java/res/drawable-xxxhdpi"/>
     <ignore regexp=".*: data_reduction_illustration.png, reader_mode_bar_background.9.png, tabs_moved_htc.png, tabs_moved_nexus.png, tabs_moved_samsung.png$"/>

[David Trainor- moved to gerrit, 2015/10/15 21:04:57]

Should we join this line with the line below?  It looks like some of these are
duplicated.

[Theresa, 2015/10/24 00:06:44]

They're duplicated because there's a different lint warning produced for each
density that's missing a certain image(s); I don't remember exactly why I had to
duplicate the lines.. currently it's not needed because the crushed sprite is in
every density but I'll drop some of the densities before landing. I'll try to
make the regexp smarter (make the expected inclusion of "
google_icon_sprite.png," 0-1 rather than creating a completely separate list).

I added a TODO note for myself (that will be done before the CL is landed). I
also still need to figure out which resolutions we need to keep and which ones
we can cut and still have the animation look good on various devices.

+    <ignore regexp=".*: data_reduction_illustration.png, google_icon_sprite.png, reader_mode_bar_background.9.png, tabs_moved_htc.png, tabs_moved_nexus.png, tabs_moved_samsung.png$"/>
+  </issue>
+  <issue id="IconDipSize">
+    <ignore regexp=".*google_icon_sprite.png.*"/>
   </issue>
   <issue id="IconLocation">
     <!-- It is OK for content_shell_apk to have missing assets. -->
     <ignore path="content/shell/android/java/res/"/>
     <!-- Suppression for chrome/test/chromedriver/test/webview_shell/java/res/drawable/icon.png -->
     <ignore path="res/drawable/icon.png"/>
     <!-- TODO(lambroslambrou) remove this once crbug.com/502030 is fixed. -->
     <ignore path="remoting/android/java/res"/>
   </issue>
   <issue id="InconsistentLayout" severity="ignore"/>
@@ skipping 36 matching lines @@
     <ignore path="content/shell/android/shell_apk/res/values/strings.xml" />
   </issue>
   <issue id="SignatureOrSystemPermissions" severity="ignore"/>
   <issue id="UnusedAttribute" severity="ignore"/>
   <issue id="ViewConstructor" severity="ignore"/>
   <issue id="WrongCall" severity="ignore"/>
   <issue id="UselessParent">
     <ignore path="chrome/android/java/res/layout/data_reduction_promo_screen.xml" />
   </issue>
 </lint>