Replaced drawables with vectors (SVG) for TrackController.

- ic_button_pause
- ic_button_record
- ic_button_stop

drawable-svg/ic_button_stop_pressed.svg

@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns:cc="http://creativecommons.org/ns#"
+    xmlns:dc="http://purl.org/dc/elements/1.1/"
+    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+    height="125"
+    version="1.1"
+    viewBox="0 0 125 125"
+    width="125"
+    xmlns="http://www.w3.org/2000/svg">
+    <circle
+        cx="62.5"
+        cy="-62.5"
+        fill="url(#linearGradient1053)"
+        r="50"
+        transform="rotate(90)" />
+    <defs>
+        <linearGradient
+            gradientTransform="translate(0,-125)"
+            gradientUnits="userSpaceOnUse"
+            id="linearGradient1053"
+            x1="12.5"
+            x2="112.5"
+            y1="62.5"
+            y2="62.5">
+            <stop
+                offset="0"
+                stop-color="#404040" />
+            <stop
+                offset="1"
+                stop-color="#555" />
+        </linearGradient>
+    </defs>
+    <ellipse
+        cx="62.502"
+        cy="63.03"
+        fill="none"
+        rx="59.986"
+        ry="59.984"
+        stroke="#555"
+        stroke-width="5.0319"
+        transform="matrix(.99996 -.0084743 0 1 0 0)" />
+    <metadata>
+        <rdf:RDF>
+            <cc:Work rdf:about="">
+                <dc:format>image/svg+xml</dc:format>
+                <dc:title />
+                <dc:type rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+            </cc:Work>
+        </rdf:RDF>
+    </metadata>
+    <rect
+        fill="#dbdbdb"
+        height="17.46"
+        stroke="#414141"
+        stroke-width="1.0402"
+        width="17.46"
+        x="53.02"
+        y="54.02" />
+</svg>