Bugzilla

**Affected versions**
* 66.0.2, 67.0b8, 68.0a1 (2019-04-07); 

**Affected platforms**
* Windows 10, macOS 10.14, 

**Steps to reproduce**
1. Launch Firefox, enable the devTools inspector with the Rules section and Changes tab being displayed;
2. In the rules inspector, for any rule type the following line: 
  **color: rEd;**
3. Press the Enter key;

**Expected result**
* the text format should remain the same (color: rEd;);

**Actual result**
* the text format is all lowercase letters (color: red;);

**Regression range**
* First bad build_date: 2018-12-06 09:33:31.527000 changeset: eeddd827762d17b290ffe65d17baf6196477f488
* Last good build_date: 2018-12-06 06:33:30.298000 changeset: ddd8bdd2f05e27159720709f8dd40a7d9dd006f6
* Pushlog: [link](https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=ddd8bdd2f05e27159720709f8dd40a7d9dd006f6&tochange=eeddd827762d17b290ffe65d17baf6196477f488)
* Potential regressor: [bug 1284852](https://bugzilla.mozilla.org/show_bug.cgi?id=1284852);

**Additional notes**
* attache screenshot with the issue;
* the Changes tab keeps the formatting as-is;

**Affected versions**
* 66.0.2, 67.0b8, 68.0a1 (2019-04-07); 

**Affected platforms**
* Windows 10, macOS 10.14, Ubuntu 16.04

**Steps to reproduce**
1. Launch Firefox, enable the devTools inspector with the Rules section and Changes tab being displayed;
2. In the rules inspector, for any rule type the following line: 
  **color: rEd;**
3. Press the Enter key;

**Expected result**
* the text format should remain the same (color: rEd;);

**Actual result**
* the text format is all lowercase letters (color: red;);

**Regression range**
* First bad build_date: 2018-12-06 09:33:31.527000 changeset: eeddd827762d17b290ffe65d17baf6196477f488
* Last good build_date: 2018-12-06 06:33:30.298000 changeset: ddd8bdd2f05e27159720709f8dd40a7d9dd006f6
* Pushlog: [link](https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=ddd8bdd2f05e27159720709f8dd40a7d9dd006f6&tochange=eeddd827762d17b290ffe65d17baf6196477f488)
* Potential regressor: [bug 1284852](https://bugzilla.mozilla.org/show_bug.cgi?id=1284852);

**Additional notes**
* attache screenshot with the issue;
* the Changes tab keeps the formatting as-is;