CHANGELOG updates for dart:html and friends

CHANGELOG.md

 ## 1.25.0
 
 ### Language
 
 #### Strong Mode
 
 ### Core library changes
 
 * `dart:io`
   * Unified backends for `SecureSocket`, `SecurityContext`, and
@@ skipping 39 matching lines @@
   class A<T> {
     // The parameter `callback` is a function that takes a `T` and returns
     // `void`.
     void forEach(void Function(T) callback);
   }
 
   // The new function type supports generic arguments.
   typedef Invoker = T Function<T>(T Function() callback);
   ```
 
-#### Strong Mode
-
-* Removed ad hoc `Future.then` inference in favor of using `FutureOr`.  Prior to
-  adding `FutureOr` to the language, the analyzer implented an ad hoc type
-  inference for `Future.then` (and overrides) treating it as if the onValue
-  callback was typed to return `FutureOr` for the purposes of inference.
-  This ad hoc inference has been removed now that `FutureOr` has been added.
-
-  Packages that implement `Future` must either type the `onValue` parameter to
-  `.then` as returning `FutureOr<T>`, or else must leave the type of the parameter
-  entirely to allow inference to fill in the type.
-
-* During static analysis, a function or setter declared using `=>` with return
-  type `void` now allows the returned expression to have any type.
-
 ### Core library changes
 
 * `dart:async`, `dart:core`, `dart:io`
     * Adding to a closed sink, including `IOSink`, is no longer not allowed. In
       1.24, violations are only reported (on stdout or stderr), but a future
       version of the Dart SDK will change this to throwing a `StateError`.
 
 * `dart:convert`
   * **BREAKING** Removed the deprecated `ChunkedConverter` class.
   * JSON maps are now typed as `Map<String, dynamic>` instead of
     `Map<dynamic, dynamic>`. A JSON-map is not a `HashMap` or `LinkedHashMap`
     anymore (but just a `Map`).
 
 * `dart:io`
   * Added `Platform.localeName`, needed for accessing the locale on platforms
     that don't store it in an environment variable.
   * Added `ProcessInfo.currentRss` and `ProcessInfo.maxRss` for inspecting
     the Dart VM process current and peak resident set size.
   * Added `RawSynchronousSocket`, a basic synchronous socket implementation.
 
+* `dart:` web APIs have been updated to align with Chrome v50.
+   This change includes **a large number of changes**, many of which are
+   breaking. In some cases, new class names may conflict with names that exist
+   in existing code.
+
+* `dart:html`
+
+  * **REMOVED** classes: `Bluetooth`, `BluetoothDevice`,
+    `BluetoothGattCharacteristic`, `BluetoothGattRemoteServer`,
+    `BluetoothGattService`, `BluetoothUuid`, `CrossOriginConnectEvent`,
+    `DefaultSessionStartEvent`, `DomSettableTokenList`, `MediaKeyError`,
+    `PeriodicSyncEvent`, `PluginPlaceholderElement`, `ReadableStream`,
+    `StashedMessagePort`, `SyncRegistration`
+
+  * **REMOVED** members:
+    * `texImage2DCanvas` was removed from `RenderingContext`.
+    * `endClip` and `startClip` were removed from `Animation`.
+    * `after` and `before` were removed from `CharacterData`, `ChildNode` and
+      `Element`.
+    * `keyLocation` was removed from `KeyboardEvent`. Use `location` instead.
+    * `generateKeyRequest`, `keyAddedEvent`, `keyErrorEvent`, `keyMessageEvent`,
+      `mediaGroup`, `needKeyEvent`, `onKeyAdded`, `onKeyError`, `onKeyMessage`,
+      and `onNeedKey` were removed from `MediaElement`.
+    * `getStorageUpdates` was removed from `Navigator`
+    * `status` was removed from `PermissionStatus`
+    * `getAvailability` was removed from `PreElement`
+
+  * Other behavior changes:
+    * URLs returned in CSS or html are formatted with quoted string.
+      Like `url("http://google.com")` instead of `url(http://google.com)`.
+    * Event timestamp property type changed from `int` to `num`.
+    * Chrome introduced slight layout changes of UI objects.
+      In addition many height/width dimensions are returned in subpixel values
+      (`num` instead of whole numbers).
+    * `setRangeText` with a `selectionMode` value of 'invalid' is no longer
+      valid. Only "select", "start", "end", "preserve" are allowed.
+
+* `dart:svg`
+
+  * A large number of additions and removals. Review your use of `dart:svg`
+    carefully.
+
+* `dart:web_audio`
+
+  * new method on `AudioContext` – `createIirFilter` returns a new class
+    `IirFilterNode`.
+
+* `dart:web_gl`
+
+  * new classes: `CompressedTextureAstc`, `ExtColorBufferFloat`,
+    `ExtDisjointTimerQuery`, and `TimerQueryExt`.
+
+  * `ExtFragDepth` added: `readPixels2` and `texImage2D2`.
+
+#### Strong Mode
+
+* Removed ad hoc `Future.then` inference in favor of using `FutureOr`.  Prior to
+  adding `FutureOr` to the language, the analyzer implented an ad hoc type
+  inference for `Future.then` (and overrides) treating it as if the onValue
+  callback was typed to return `FutureOr` for the purposes of inference.
+  This ad hoc inference has been removed now that `FutureOr` has been added.
+
+  Packages that implement `Future` must either type the `onValue` parameter to
+  `.then` as returning `FutureOr<T>`, or else must leave the type of the parameter
+  entirely to allow inference to fill in the type.
+
+* During static analysis, a function or setter declared using `=>` with return
+  type `void` now allows the returned expression to have any type.
 
 ### Tool Changes
 
+* Dartium
+
+  Dartium is now based on Chrome v50. See *Core library changes* above for
+  details on the changed APIs.
+
 * Pub
     * Added support for the Dart Development Compiler in `build` and `serve`.
 
       Unlike dart2js, this new compiler is modular, which allows pub to do
       incremental re-builds for `pub serve`, and potentially `pub build` in the
       future.
 
       In practice what that means is you can edit your Dart files, refresh in
       Chrome (or other supported browsers), and see your edits almost
       immediately. This is because pub is only recompiling your package, not all
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     they will keep the Dart process alive until they time out. This fixes the
     handling of persistent connections. Previously, the client would shut down
     immediately after a request.
 
   * **Breaking change:** `HttpServer` no longer compresses all traffic by
     default. The new `autoCompress` property can be set to `true` to re-enable
     compression.
 
 * `dart:isolate`: `Isolate.spawnUri` added the optional `packageRoot` argument,
   which controls how it resolves `package:` URIs.