Add download button to MediaDocument on Android.

third_party/WebKit/LayoutTests/platform/linux/virtual/android/media/mediadocument/media-document-with-download-button-expected.txt

Index: third_party/WebKit/LayoutTests/platform/linux/virtual/android/media/mediadocument/media-document-with-download-button-expected.txt
diff --git a/third_party/WebKit/LayoutTests/platform/linux/media/media-document-audio-repaint-expected.txt b/third_party/WebKit/LayoutTests/platform/linux/virtual/android/media/mediadocument/media-document-with-download-button-expected.txt
similarity index 77%
copy from third_party/WebKit/LayoutTests/platform/linux/media/media-document-audio-repaint-expected.txt
copy to third_party/WebKit/LayoutTests/platform/linux/virtual/android/media/mediadocument/media-document-with-download-button-expected.txt
index 1043ff3d23935e02d77a0110f7ce5fc3c3c20420..964194338f618771b7ca3049b50f0d0e43895ce0 100644
--- a/third_party/WebKit/LayoutTests/platform/linux/media/media-document-audio-repaint-expected.txt
+++ b/third_party/WebKit/LayoutTests/platform/linux/virtual/android/media/mediadocument/media-document-with-download-button-expected.txt
@@ -4,12 +4,10 @@ layer at (0,0) size 800x600
   LayoutBlockFlow {HTML} at (0,0) size 800x600
     LayoutBlockFlow {BODY} at (8,8) size 784x584
       LayoutBlockFlow {P} at (0,0) size 784x20
-        LayoutText {#text} at (0,0) size 701x19
-          text run at (0,0) width 620: "This tests that in a standalone media document with audio content, the media element repaints correctly "
-          text run at (620,0) width 81: "while playing."
+        LayoutText {#text} at (0,0) size 749x19
+          text run at (0,0) width 659: "This tests that in a standalone media document with audio content, a download button is positioned below the "
+          text run at (659,0) width 90: "media element."
       LayoutBlockFlow (anonymous) at (0,36) size 784x334
-        LayoutText {#text} at (0,0) size 0x0
-        LayoutText {#text} at (0,0) size 0x0
 layer at (8,44) size 384x334
   LayoutIFrame {IFRAME} at (0,0) size 384x334 [border: (2px inset #EEEEEE)]
     layer at (0,0) size 380x330
@@ -17,6 +15,10 @@ layer at (8,44) size 384x334
     layer at (0,0) size 380x330
       LayoutBlockFlow {HTML} at (0,0) size 380x330
         LayoutBlockFlow {BODY} at (8,8) size 364x314 [bgcolor=#000000]
+    layer at (130,202) size 120x36
+      LayoutBlockFlow (positioned) {A} at (130,202) size 120x36 [color=#FFFFFF] [bgcolor=#4285F4]
+        LayoutText {#text} at (18,9) size 84x17
+          text run at (18,9) width 84: "DOWNLOAD"
     layer at (40,165) size 300x1
       LayoutVideo (positioned) {VIDEO} at (40,164.50) size 300x1
     layer at (40,165) size 300x1
@@ -30,7 +32,7 @@ layer at (8,44) size 384x334
         LayoutSlider {INPUT} at (48,11) size 98.47x8
           LayoutFlexibleBox {DIV} at (0,0) size 98.47x8 [border: (1px solid #E6E6E659)]
             LayoutBlockFlow {DIV} at (1,-8) size 110.47x24
-              LayoutBlockFlow {DIV} at (32.22,0) size 32x24
+              LayoutBlockFlow {DIV} at (-7,0) size 32x24
         LayoutFlexibleBox {DIV} at (161.47,0) size 25x30 [color=#FFFFFF]
           LayoutBlockFlow (anonymous) at (0,0) size 25x30
             LayoutText {#text} at (0,7) size 25x16