Refine decorate view of QR Code scanner

1.Draw rounded corner line.
2.Paint 70% white transparency background.

Bug: 118797380
Test: make RunSettingsRoboTests
Change-Id: I1192e32cf4ec801a3efcad4287c2e547deeac3bf
diff --git a/color-check-baseline.xml b/color-check-baseline.xml
index 787c559..fd0fc6c 100644
--- a/color-check-baseline.xml
+++ b/color-check-baseline.xml
@@ -2,18 +2,6 @@
 <issues format="4">
 
     <issue
-        id="LintError"
-        severity="Error"
-        message="No `.class` files were found in project &quot;.&quot;, so none of the classfile based checks could be run. Does the project need to be built first?"
-        category="Lint"
-        priority="10"
-        summary="Lint Failure"
-        explanation="This issue type represents a problem running lint itself. Examples include failure to find bytecode for source files (which means certain detectors could not be run), parsing errors in lint configuration files, etc.&#xA;These errors are not errors in your own code, but they are shown to make it clear that some checks were not completed.">
-        <location
-            file="."/>
-    </issue>
-
-    <issue
         id="HardCodedColor"
         severity="Error"
         message="Avoid using hardcoded color"
@@ -1301,6 +1289,54 @@
         priority="4"
         summary="Using hardcoded color"
         explanation="Hardcoded color values are bad because theme changes cannot be uniformly applied.Instead use the theme specific colors such as `?android:attr/textColorPrimary` in attributes.&#xA;This ensures that a theme change from a light to a dark theme can be uniformlyapplied across the app."
+        errorLine1="    &lt;color name=&quot;qr_corner_line_color&quot;>#ffdadce0&lt;/color>"
+        errorLine2="    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="res/values/colors.xml"
+            line="133"
+            column="5"/>
+    </issue>
+
+    <issue
+        id="HardCodedColor"
+        severity="Error"
+        message="Avoid using hardcoded color"
+        category="Correctness"
+        priority="4"
+        summary="Using hardcoded color"
+        explanation="Hardcoded color values are bad because theme changes cannot be uniformly applied.Instead use the theme specific colors such as `?android:attr/textColorPrimary` in attributes.&#xA;This ensures that a theme change from a light to a dark theme can be uniformlyapplied across the app."
+        errorLine1="    &lt;color name=&quot;qr_focused_corner_line_color&quot;>#ff1a73e8&lt;/color>"
+        errorLine2="    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="res/values/colors.xml"
+            line="134"
+            column="5"/>
+    </issue>
+
+    <issue
+        id="HardCodedColor"
+        severity="Error"
+        message="Avoid using hardcoded color"
+        category="Correctness"
+        priority="4"
+        summary="Using hardcoded color"
+        explanation="Hardcoded color values are bad because theme changes cannot be uniformly applied.Instead use the theme specific colors such as `?android:attr/textColorPrimary` in attributes.&#xA;This ensures that a theme change from a light to a dark theme can be uniformlyapplied across the app."
+        errorLine1="    &lt;color name=&quot;qr_background_color&quot;>#b3ffffff&lt;/color> &lt;!-- 70% white transparency -->"
+        errorLine2="    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="res/values/colors.xml"
+            line="135"
+            column="5"/>
+    </issue>
+
+    <issue
+        id="HardCodedColor"
+        severity="Error"
+        message="Avoid using hardcoded color"
+        category="Correctness"
+        priority="4"
+        summary="Using hardcoded color"
+        explanation="Hardcoded color values are bad because theme changes cannot be uniformly applied.Instead use the theme specific colors such as `?android:attr/textColorPrimary` in attributes.&#xA;This ensures that a theme change from a light to a dark theme can be uniformlyapplied across the app."
         errorLine1="                android:background=&quot;@color/lock_pattern_background&quot; />"
         errorLine2="                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
         <location
@@ -2441,7 +2477,7 @@
         errorLine2="                                   ~~~~~~~~~~~~~~~~~~~">
         <location
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-            line="5805"
+            line="5883"
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@@ -2473,7 +2509,7 @@
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+            line="415"
             column="44"/>
     </issue>
 
@@ -2489,7 +2525,7 @@
         errorLine2="                                           ^">
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-            line="431"
+            line="421"
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@@ -2505,7 +2541,7 @@
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@@ -2521,23 +2557,7 @@
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-            line="467"
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-    </issue>
-
-    <issue
-        id="HardCodedColor"
-        severity="Error"
-        message="Avoid using hardcoded color"
-        category="Correctness"
-        priority="4"
-        summary="Using hardcoded color"
-        explanation="Hardcoded color values are bad because theme changes cannot be uniformly applied.Instead use the theme specific colors such as `?android:attr/textColorPrimary` in attributes.&#xA;This ensures that a theme change from a light to a dark theme can be uniformlyapplied across the app."
-        errorLine1="        &lt;item name=&quot;strokeColor&quot;>@color/homepage_card_stroke_color&lt;/item>"
-        errorLine2="                                 ^">
-        <location
-            file="res/values/styles.xml"
-            line="474"
+            line="457"
             column="34"/>
     </issue>
 
@@ -2553,7 +2573,7 @@
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@@ -2569,7 +2589,7 @@
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@@ -2585,7 +2605,7 @@
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@@ -2601,7 +2621,7 @@
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@@ -2617,7 +2637,7 @@
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@@ -2633,7 +2653,7 @@
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@@ -2649,7 +2669,7 @@
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@@ -2665,7 +2685,7 @@
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@@ -2681,7 +2701,7 @@
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@@ -2697,7 +2717,7 @@
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@@ -2713,7 +2733,7 @@
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@@ -2729,7 +2749,7 @@
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@@ -2745,7 +2765,7 @@
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@@ -2761,7 +2781,7 @@
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