Replace assets for avatar placeholder on Android

build/android/lint/suppressions.xml

Index: build/android/lint/suppressions.xml
diff --git a/build/android/lint/suppressions.xml b/build/android/lint/suppressions.xml
index 177d70726edd48b958f9323090f231e65b44eaf3..d45d040099235e4637ae1feb03f488aa635b0bba 100644
--- a/build/android/lint/suppressions.xml
+++ b/build/android/lint/suppressions.xml
@@ -196,6 +196,7 @@ Still reading?
     <ignore regexp="chrome/android/java/res/drawable/ic_signal_cellular_2_bar.xml" />
     <ignore regexp="chrome/android/java/res/drawable/ic_signal_cellular_3_bar.xml" />
     <ignore regexp="chrome/android/java/res/drawable/ic_signal_cellular_4_bar.xml" />
+    <ignore regexp="chrome/android/java/res/drawable/logo_avatar_anonymous.xml"/>

[Theresa, 2017/06/01 23:22:15]

optional nit: Instead of adding an ingnore here, you can add
tools:targetApi="21" to the <vector> in the XML file. I don't know that we have
an established pattern (some vectors use tools: some add a rule here), but my
preference is tools:.

[bsazonov, 2017/06/02 13:17:20]

Didn't know about this option, thanks! I totally agree that this is way better
than ignoring it suppressions.xml.

     <ignore regexp="chrome/android/java/res/values-v17/styles.xml"/>
     <ignore regexp="chromecast/internal"/>
     <ignore regexp="com/android/tv"/>