Manual engine roll with fixes: (#26252)

https://github.com/flutter/engine/compare/7112b72cc229...e5ec3cf3ea5c

git log
7112b72cc229e05d36716c3d7739885d3ffa72e6..e5ec3cf3ea5ce78c6c3116271601f60d30a799d4
--no-merges --oneline
e5ec3cf3e Dart SDK roll for 2019-01-08
08c95d27a Roll src/third_party/skia 55ff5d3ba881..1337f5b85978 (10
commits) (flutter/engine#7407)
e385f5cbb Roll src/third_party/skia 26d173fee72b..55ff5d3ba881 (12
commits) (flutter/engine#7406)
0f8273b0c Dart SDK roll for 2019-01-07
4036b260a Reset ParagraphBuilder after build() (flutter/engine#7401)
4820cbec4 Dart SDK roll for 2019-01-07
8eccb860d Add onStart hook to FlutterFragmentActivity
(flutter/engine#6719)
f2ea838b3 Roll src/third_party/skia b2fdcbf3033f..26d173fee72b (10
commits) (flutter/engine#7400)
5ca8aadaa Announce in/out of list (flutter/engine#6918)
4487d392d Replace Java code with equivalent, more concise code.
(flutter/engine#7398)
395b7852d Roll src/third_party/skia 46ee3f7a8ff5..b2fdcbf3033f (11
commits) (flutter/engine#7394)
5965f9084 Make `ParagraphConstraints` have const constructor
(flutter/engine#7346)
e02dd416a Roll src/third_party/skia a47eb455360f..46ee3f7a8ff5 (2
commits) (flutter/engine#7390)
f0038b3cc Roll src/third_party/skia 3ac3a4053f86..a47eb455360f (2
commits) (flutter/engine#7389)

bin/internal/engine.version

-7112b72cc229e05d36716c3d7739885d3ffa72e6
+e5ec3cf3ea5ce78c6c3116271601f60d30a799d4

examples/layers/raw/text.dart

@@ -84,7 +84,7 @@ void main() {
     // Next, we supply a width that the text is permitted to occupy and we ask
     // the paragraph to the visual position of each its glyphs as well as its
     // overall size, subject to its sizing constraints.
-    ..layout(ui.ParagraphConstraints(width: 180.0));
+    ..layout(const ui.ParagraphConstraints(width: 180.0));
 
   // Finally, we register our beginFrame callback and kick off the first frame.
   ui.window.onBeginFrame = beginFrame;

packages/flutter/lib/src/painting/text_painter.dart

@@ -242,7 +242,7 @@ class TextPainter {
         builder.pushStyle(text.style.getTextStyle(textScaleFactor: textScaleFactor));
       builder.addText(' ');
       _layoutTemplate = builder.build()
-        ..layout(ui.ParagraphConstraints(width: double.infinity));
+        ..layout(const ui.ParagraphConstraints(width: double.infinity));
     }
     return _layoutTemplate.height;
   }

packages/flutter/test/engine/paragraph_builder_test.dart

@@ -13,7 +13,7 @@ void main() {
     final Paragraph paragraph = builder.build();
     expect(paragraph, isNotNull);
 
-    paragraph.layout(ParagraphConstraints(width: 800.0));
+    paragraph.layout(const ParagraphConstraints(width: 800.0));
     expect(paragraph.width, isNonZero);
     expect(paragraph.height, isNonZero);
   });

packages/flutter/test/engine/paragraph_test.dart

@@ -20,7 +20,7 @@ void main() {
       ));
       builder.addText('Test');
       final Paragraph paragraph = builder.build();
-      paragraph.layout(ParagraphConstraints(width: 400.0));
+      paragraph.layout(const ParagraphConstraints(width: 400.0));
 
       expect(paragraph.height, closeTo(fontSize, 0.001));
       expect(paragraph.width, closeTo(400.0, 0.001));