Delete unused code for exclusive access permission prompting.

chrome/browser/resources/options/content_settings.html

Index: chrome/browser/resources/options/content_settings.html
diff --git a/chrome/browser/resources/options/content_settings.html b/chrome/browser/resources/options/content_settings.html
index e7b2dfb43aa1483986d1ff979d8a61e74ccadba7..9c33646c74b2f802780de236e86f3ded107b4e82 100644
--- a/chrome/browser/resources/options/content_settings.html
+++ b/chrome/browser/resources/options/content_settings.html
@@ -631,7 +631,7 @@
     <!-- Fullscreen filter -->
     <section id="fullscreen-section">
       <h3 i18n-content="fullscreenTabLabel"></h3>
-      <p id="fullscreen-deprecated" i18n-content="fullscreenDeprecated"></p>
+      <p i18n-content="fullscreenDeprecated"></p>
       <div class="settings-row">
         <button class="exceptions-list-button" contentType="fullscreen"
             i18n-content="manageExceptions"></button>
@@ -640,39 +640,7 @@
     <!-- Mouse Lock filter -->

[scheib, 2016/05/31 18:20:24]

Can even more of this HTML be trimmed, since content settings are completely
unused now?

[Matt Giuca, 2016/06/01 00:54:29]

Sadly, they are still used. https://crbug.com/591896

[scheib, 2016/06/01 01:01:03]

Ah, thanks. Please update the issue(or blockers) with specifically what is
remaining and add HTML comment here referencing this issue.

[Matt Giuca, 2016/06/01 01:11:03]

Done.

     <section id="mouselock-section">
       <h3 i18n-content="mouselockTabLabel"></h3>
-      <p id="mouselock-deprecated" i18n-content="mouselockDeprecated"></p>
-      <div id="mouselock-global-settings">
-        <div class="radio">
-          <label>
-            <input type="radio" name="mouselock" value="allow">
-            <span>
-              <span i18n-content="mouselockAllow"></span>
-              <span class="controlled-setting-indicator"
-                  content-setting="mouselock" value="allow"></span>
-            </span>
-          </label>
-        </div>
-        <div class="radio">
-          <label>
-            <input type="radio" name="mouselock" value="ask">
-            <span>
-              <span i18n-content="mouselockAsk"></span>
-              <span class="controlled-setting-indicator"
-                  content-setting="mouselock" value="ask"></span>
-            </span>
-          </label>
-        </div>
-        <div class="radio">
-          <label>
-            <input type="radio" name="mouselock" value="block">
-            <span>
-              <span i18n-content="mouselockBlock"></span>
-              <span class="controlled-setting-indicator"
-                  content-setting="mouselock" value="block"></span>
-            </span>
-          </label>
-        </div>
-      </div>
+      <p i18n-content="mouselockDeprecated"></p>
       <div>
         <div class="settings-row">
           <button class="exceptions-list-button" contentType="mouselock"