DevTools: Initial implementation of line-level CPU profile.

third_party/WebKit/Source/devtools/front_end/source_frame/cmdevtools.css

Index: third_party/WebKit/Source/devtools/front_end/source_frame/cmdevtools.css
diff --git a/third_party/WebKit/Source/devtools/front_end/source_frame/cmdevtools.css b/third_party/WebKit/Source/devtools/front_end/source_frame/cmdevtools.css
index 87887a78516820b529c6095e578b2ad01296baf9..5d4da132af15443ba1006a248459f9500abf486c 100644
--- a/third_party/WebKit/Source/devtools/front_end/source_frame/cmdevtools.css
+++ b/third_party/WebKit/Source/devtools/front_end/source_frame/cmdevtools.css
@@ -7,6 +7,12 @@
   overflow: visible !important;
 }
 
+.CodeMirror-linemarkers-performance {
+  width: 74px;

[pfeldman, 2016/03/07 19:57:50]

4 space indent?

[alph, 2016/03/08 00:57:42]

Done.

+  background-color: white;
+  margin-left: 3px;
+}
+
 .CodeMirror .source-frame-eval-expression {
   outline: 0;
   border: 1px solid rgb(163, 41, 34);
@@ -273,6 +279,11 @@
     opacity: 0.5;
 }
 
+.text-editor-performance-info {
+  text-align: right;

[pfeldman, 2016/03/07 19:57:50]

ditto

[alph, 2016/03/08 00:57:42]

Done.

+  padding-right: 3px;
+}
+
 .text-editor-messages-description-container {
     display: inline-block;
 }