Enable viewport <meta> tag support for mobile platforms only (#39133)

shubhamg13 · web-flow · commit 40ced5bb61a9 · 2025-09-04T19:14:53.000Z
Enable viewport `<meta>` tag support for mobile platforms only. _Reference:_ [web_preferences.h](https://source.chromium.org/chromium/chromium/src/+/main:third_party/blink/public/common/web_preferences/web_preferences.h;l=158?) _Todo: Enable for when requested desktop site:_ [web_contents_impl.cc](https://source.chromium.org/chromium/chromium/src/+/main:content/browser/web_contents/web_contents_impl.cc;l=3752?) Testing: Tested Manually Fixes: #39002 Signed-off-by: Shubham Gupta <shubham13297@gmail.com>
diff --git a/components/script/dom/html/htmlmetaelement.rs b/components/script/dom/html/htmlmetaelement.rs
@@ -64,7 +64,9 @@ impl HTMLMetaElement {
             if name == "referrer" {
                 self.apply_referrer();
             }
-            if name == "viewport" {
+            if (cfg!(target_os = "android") || cfg!(target_os = "ios") || cfg!(target_env = "ohos")) &&
+                name == "viewport"
+            {
                 self.parse_and_send_viewport_if_necessary();
             }
         // https://html.spec.whatwg.org/multipage/#attr-meta-http-equiv

Original file line number	Diff line number	Diff line change
`@@ -64,7 +64,9 @@ impl HTMLMetaElement {`
`64`	`64`	`if name == "referrer" {`
`65`	`65`	`self.apply_referrer();`
`66`	`66`	`}`
`67`		`- if name == "viewport" {`
	`67`	`+ if (cfg!(target_os = "android") \|\| cfg!(target_os = "ios") \|\| cfg!(target_env = "ohos")) &&`
	`68`	`+ name == "viewport"`
	`69`	`+ {`
`68`	`70`	`self.parse_and_send_viewport_if_necessary();`
`69`	`71`	`}`
`70`	`72`	`// https://html.spec.whatwg.org/multipage/#attr-meta-http-equiv`