Add isolate tag-profile and better handling of errors

runtime/bin/vmservice/client/deployed/web/index_devtools.html

Index: runtime/bin/vmservice/client/deployed/web/index_devtools.html
diff --git a/runtime/bin/vmservice/client/deployed/web/index_devtools.html b/runtime/bin/vmservice/client/deployed/web/index_devtools.html
index 4fa9c30a9792d079e1de6c1cf94fc24fa3fd669a..f51ef56a4ef62d935b0038501391a6b9a575942e 100644
--- a/runtime/bin/vmservice/client/deployed/web/index_devtools.html
+++ b/runtime/bin/vmservice/client/deployed/web/index_devtools.html
@@ -1040,6 +1040,37 @@
       </div>
     </div>
 
+    <template if="{{ isolate.error != null }}">
+      <div class="content">
+        <h1>Error</h1>
+        <div class="memberList">
+          <div class="memberItem">
+            <div class="memberName">message</div>
+            <div class="memberValue">
+              <pre>{{ isolate.error.message }}</pre>
+            </div>
+          </div>
+          <div class="memberItem">
+            <template if="{{ isolate.error.exception != null }}">
+              <div class="memberName">exception</div>
+              <div class="memberValue">
+                <instance-ref ref="{{ isolate.error.exception }}"></instance-ref>
+              </div>
+            </template>
+          </div>
+          <div class="memberItem">
+            <template if="{{ isolate.error.stacktrace != null }}">
+            <div class="memberName">stacktrace</div>
+            <div class="memberValue">
+              <instance-ref ref="{{ isolate.error.stacktrace }}"></instance-ref>
+            </div>
+            </template>
+          </div>
+        </div>
+      </div>
+      <hr>
+    </template>
+
     <template if="{{ isolate.topFrame != null }}">
       <br>
       <div class="sourceInset">
@@ -1130,6 +1161,12 @@
     <hr>
 
     <div class="content">
+      <div id="tagProfileChart" class="col-md-8" style="height: 400px"></div>
+    </div>
+
+    <hr>
+
+    <div class="content">
       <eval-box callback="{{ eval }}"></eval-box>
     </div>
     <br><br><br><br>
@@ -1855,6 +1892,47 @@
   </template>
   
 </polymer-element>
+<polymer-element name="service-exception-view" extends="observatory-element">
+  <template>
+    <nav-bar>
+      <top-nav-menu last="{{ true }}"></top-nav-menu>
+    </nav-bar>
+
+    <div class="row">
+    <div class="col-md-8 col-md-offset-2">
+      <div class="panel panel-danger">
+        <div class="panel-heading">{{ exception.kind }}</div>
+        <div class="panel-body">
+          <p>{{ exception.message }}</p>
+        </div>
+        <div class="well">
+          <p>{{ exception.response }}</p>
+        </div>
+      </div>
+    </div>
+    </div>
+  </template>
+  
+</polymer-element>
+<polymer-element name="service-error-view" extends="observatory-element">
+  <template>
+    <nav-bar>
+      <top-nav-menu last="{{ true }}"></top-nav-menu>
+    </nav-bar>
+
+    <div class="row">
+    <div class="col-md-8 col-md-offset-2">
+      <div class="panel panel-danger">
+        <div class="panel-heading">{{ error.kind }}</div>
+        <div class="panel-body">
+          <p>{{ error.message }}</p>
+        </div>
+      </div>
+    </div>
+    </div>
+  </template>
+  
+</polymer-element>
 <polymer-element name="vm-ref" extends="service-ref">
 <template>
   <a href="{{ url }}">{{ ref.name }}</a>