DevTools: [CodeMirror] Add syntax highlighting for some other languages.

Source/devtools/front_end/SourceFrame.js

Index: Source/devtools/front_end/SourceFrame.js
diff --git a/Source/devtools/front_end/SourceFrame.js b/Source/devtools/front_end/SourceFrame.js
index 659825c0ac42bc1c2bf765fa32f5e56e0ed3f011..3907b64a1ca923f813b409fca9bc7727909bfdf4 100644
--- a/Source/devtools/front_end/SourceFrame.js
+++ b/Source/devtools/front_end/SourceFrame.js
@@ -318,7 +318,7 @@ WebInspector.SourceFrame.prototype = {
         this.clearMessages();
     },
 
-    _simplifyMimeType: function(mimeType)
+    _simplifyMimeType: function(content, mimeType)
     {
         if (!mimeType)
             return "";
@@ -326,6 +326,9 @@ WebInspector.SourceFrame.prototype = {
             mimeType.indexOf("jscript") >= 0 ||
             mimeType.indexOf("ecmascript") >= 0)
             return "text/javascript";
+        // A hack around the fact that files with "php" extension might be either standalone or html embedded php scripts.
+        if (mimeType === "text/x-php" && content.match(/\<\?.*\?\>/g))
+            return "application/x-httpd-php";
         return mimeType;
     },
 
@@ -343,7 +346,7 @@ WebInspector.SourceFrame.prototype = {
         } else
             this._textEditor.editRange(this._textEditor.range(), content || "");
 
-        this._textEditor.mimeType = this._simplifyMimeType(mimeType);
+        this._textEditor.mimeType = this._simplifyMimeType(content, mimeType);
 
         this._textEditor.beginUpdates();