servo: Add an Info.plist on the Mac and opt into integrated graphics.

Discrete GPUs cause power use problems and tend to perform badly with
WebRender.

See:

* https://developer.apple.com/library/mac/qa/qa1734/_index.html

* https://reverse.put.as/2013/05/28/gimmedebugah-how-to-embedded-a-info-plist-into-arbitrary-binaries/

components/servo/main.rs

@@ -37,6 +37,17 @@ use servo::util::opts::{self, ArgumentParsingResult};
 use servo::util::panicking::initiate_panic_hook;
 use std::rc::Rc;
 
+pub mod platform {
+    #[cfg(target_os = "macos")]
+    pub use platform::macos::deinit;
+
+    #[cfg(target_os = "macos")]
+    pub mod macos;
+
+    #[cfg(not(target_os = "macos"))]
+    pub fn deinit() {}
+}
+
 fn main() {
     // Parse the command line options and store them globally
     let opts_result = opts::from_cmdline_args(&*args());
@@ -82,6 +93,8 @@ fn main() {
     };
 
     unregister_glutin_resize_handler(&window);
+
+    platform::deinit()
 }
 
 fn register_glutin_resize_handler(window: &Rc<app::window::Window>,

components/servo/platform/macos/Info.plist

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>NSSupportsAutomaticGraphicsSwitching</key>
+	<true/>
+	<key>CFBundleDisplayName</key>
+	<string>Servo</string>
+	<key>CFBundlePackageType</key>
+	<string>APPL</string>
+	<key>CFBundleName</key>
+	<string>Servo</string>
+	<key>NSHumanReadableCopyright</key>
+	<string>Copyright &#169; 2016 The Servo Authors</string>
+	<key>CFBundleVersion</key>
+	<string>0.0.1</string>
+	<key>CFBundleIdentifier</key>
+	<string>org.servo.servo</string>
+</dict>
+</plist>
+

components/servo/platform/macos/mod.rs

@@ -0,0 +1,19 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+use std::ptr;
+
+pub fn deinit() {
+    // An unfortunate hack to make sure the linker's dead code stripping doesn't strip our
+    // `Info.plist`.
+    unsafe {
+        ptr::read_volatile(&INFO_PLIST[0]);
+    }
+}
+
+#[cfg(target_os = "macos")]
+#[link_section = "__TEXT,__info_plist"]
+#[no_mangle]
+pub static INFO_PLIST: [u8; 619] = *include_bytes!("Info.plist");
+

python/tidy/servo_tidy/tidy.py

@@ -41,6 +41,9 @@
     os.path.join(".", "tests", "wpt", "metadata", "MANIFEST.json"),
     os.path.join(".", "tests", "wpt", "metadata-css", "MANIFEST.json"),
     os.path.join(".", "components", "script", "dom", "webidls", "ForceTouchEvent.webidl"),
+    # FIXME(pcwalton, #11679): This is a workaround for a tidy error on the quoted string
+    # `"__TEXT,_info_plist"` inside an attribute.
+    os.path.join(".", "components", "servo", "platform", "macos", "mod.rs"),
     # Hidden files
     os.path.join(".", "."),
 ]