Fix incorrect rebaseline of one test (contentsOpaque should be false).

third_party/WebKit/LayoutTests/paint/invalidation/background-resize-height-expected.txt

Index: third_party/WebKit/LayoutTests/paint/invalidation/background-resize-height-expected.txt
diff --git a/third_party/WebKit/LayoutTests/paint/invalidation/background-resize-height-expected.txt b/third_party/WebKit/LayoutTests/paint/invalidation/background-resize-height-expected.txt
index fd0630959870aad3c112983a3554b8b429755bf3..1d4986d45e5ba67975b637b1b0ed345f26d8beed 100644
--- a/third_party/WebKit/LayoutTests/paint/invalidation/background-resize-height-expected.txt
+++ b/third_party/WebKit/LayoutTests/paint/invalidation/background-resize-height-expected.txt
@@ -10,7 +10,6 @@
       "name": "LayoutBlockFlow (positioned) DIV class='test image'",
       "position": [8, 8],
       "bounds": [60, 44],
-      "contentsOpaque": true,
       "drawsContent": true,
       "backfaceVisibility": "hidden",
       "paintInvalidations": [
@@ -25,7 +24,6 @@
       "name": "LayoutBlockFlow (positioned) DIV class='test image size-cover'",
       "position": [58, 8],
       "bounds": [60, 44],
-      "contentsOpaque": true,
       "drawsContent": true,
       "backfaceVisibility": "hidden",
       "paintInvalidations": [
@@ -40,7 +38,6 @@
       "name": "LayoutBlockFlow (positioned) DIV class='test image size-contain'",
       "position": [108, 8],
       "bounds": [60, 44],
-      "contentsOpaque": true,
       "drawsContent": true,
       "backfaceVisibility": "hidden",
       "paintInvalidations": [
@@ -55,7 +52,6 @@
       "name": "LayoutBlockFlow (positioned) DIV class='test image fixed-height'",
       "position": [158, 8],
       "bounds": [60, 44],
-      "contentsOpaque": true,
       "drawsContent": true,
       "backfaceVisibility": "hidden",
       "paintInvalidations": [
@@ -70,7 +66,6 @@
       "name": "LayoutBlockFlow (positioned) DIV class='test image percent-height'",
       "position": [208, 8],
       "bounds": [60, 44],
-      "contentsOpaque": true,
       "drawsContent": true,
       "backfaceVisibility": "hidden",
       "paintInvalidations": [
@@ -85,7 +80,6 @@
       "name": "LayoutBlockFlow (positioned) DIV class='test image top'",
       "position": [258, 8],
       "bounds": [60, 44],
-      "contentsOpaque": true,
       "drawsContent": true,
       "backfaceVisibility": "hidden",
       "paintInvalidations": [
@@ -100,7 +94,6 @@
       "name": "LayoutBlockFlow (positioned) DIV class='test image bottom'",
       "position": [308, 8],
       "bounds": [60, 44],
-      "contentsOpaque": true,
       "drawsContent": true,
       "backfaceVisibility": "hidden",
       "paintInvalidations": [
@@ -115,7 +108,6 @@
       "name": "LayoutBlockFlow (positioned) DIV class='test image center'",
       "position": [358, 8],
       "bounds": [60, 44],
-      "contentsOpaque": true,
       "drawsContent": true,
       "backfaceVisibility": "hidden",
       "paintInvalidations": [
@@ -158,7 +150,6 @@
       "name": "LayoutBlockFlow (positioned) DIV class='test image repeat-round'",
       "position": [508, 8],
       "bounds": [60, 44],
-      "contentsOpaque": true,
       "drawsContent": true,
       "backfaceVisibility": "hidden",
       "paintInvalidations": [