Move the user agent styles sheets to blink_resources.grd (Part 3)

Source/core/rendering/RenderThemeChromiumMac.mm

Index: Source/core/rendering/RenderThemeChromiumMac.mm
diff --git a/Source/core/rendering/RenderThemeChromiumMac.mm b/Source/core/rendering/RenderThemeChromiumMac.mm
index 5fe39acf8ad709f25340e6a776be2ccbb941dd70..ee9238fddbf29baca851ce73d76fa98155428541 100644
--- a/Source/core/rendering/RenderThemeChromiumMac.mm
+++ b/Source/core/rendering/RenderThemeChromiumMac.mm
@@ -23,7 +23,6 @@
 
 #import "core/CSSValueKeywords.h"
 #import "core/HTMLNames.h"
-#import "core/UserAgentStyleSheets.h"
 #import "core/css/CSSValueList.h"
 #import "core/dom/Document.h"
 #import "core/dom/Element.h"
@@ -55,6 +54,8 @@
 #import "platform/mac/WebCoreNSCellExtras.h"
 #import "platform/text/PlatformLocale.h"
 #import "platform/text/StringTruncator.h"
+#import "public/platform/Platform.h"
+#import "public/platform/WebData.h"
 
 #import <AvailabilityMacros.h>
 #import <Carbon/Carbon.h>
@@ -1860,10 +1861,14 @@ String RenderThemeChromiumMac::extraFullScreenStyleSheet()
 
 String RenderThemeChromiumMac::extraDefaultStyleSheet()
 {
+    const blink::WebData& themeChromiumCssResource = blink::Platform::current()->loadResource("themeChromium.css");
+    const blink::WebData& themeInputMultipleFieldsCssResource = blink::Platform::current()->loadResource("themeInputMultipleFields.css");
+    const blink::WebData& themeMacCssResource = blink::Platform::current()->loadResource("themeMac.css");
+
     return RenderTheme::extraDefaultStyleSheet() +
-        String(themeChromiumCss, sizeof(themeChromiumCss)) +
-        String(themeInputMultipleFieldsCss, sizeof(themeInputMultipleFieldsCss)) +
-        String(themeMacCss, sizeof(themeMacCss));
+        String(themeChromiumCssResource.data(), themeChromiumCssResource.size()) +
+        String(themeInputMultipleFieldsCssResource.data(), themeInputMultipleFieldsCssResource.size()) +
+        String(themeMacCssResource.data(), themeMacCssResource.size());
 }
 
 bool RenderThemeChromiumMac::paintMediaVolumeSliderContainer(RenderObject* object, const PaintInfo& paintInfo, const IntRect& rect)