Move mimetype definitions to plugin specs

- Avoids the hassle of QRC files and manually registering mime types
- Avoids performance regressions because of mime types that are
  registered after mime database has been used
- Makes it technically possible to detect that a disabled plugin could
  handle a mime type if it was enabled

Change-Id: I373008b1b56e9c6b4853055f20b3eeb112a6eff9
Reviewed-by: Christian Stenger <christian.stenger@qt.io>
Reviewed-by: hjk <hjk@qt.io>

src/plugins/qmlprojectmanager/QmlProjectManager.json.in

@@ -15,5 +15,17 @@
     \"Category\" : \"Qt Quick\",
     \"Description\" : \"Qt Quick support\",
     \"Url\" : \"http://www.qt.io\",
-    $$dependencyList
+    $$dependencyList,
+
+    \"Mimetypes\" : \"
+    <?xml version=\'1.0\'?>
+
+    <mime-info xmlns=\'http://www.freedesktop.org/standards/shared-mime-info\'>
+      <mime-type type=\'application/x-qmlproject\'>
+        <sub-class-of type=\'text/x-qml\'/>
+        <comment>QML Project file</comment>
+        <glob pattern=\'*.qmlproject\'/>
+      </mime-type>
+    </mime-info>
+    \"
 }

src/plugins/qmlprojectmanager/QmlProjectManager.mimetypes.xml

@@ -1,9 +0,0 @@
-<?xml version="1.0"?>
-
-<mime-info xmlns='http://www.freedesktop.org/standards/shared-mime-info'>
-  <mime-type type="application/x-qmlproject">
-    <sub-class-of type="text/x-qml"/>
-    <comment>QML Project file</comment>
-    <glob pattern="*.qmlproject"/>
-  </mime-type>
-</mime-info>

src/plugins/qmlprojectmanager/qmlproject.qrc

@@ -1,6 +1,5 @@
 <RCC>
     <qresource prefix="/qmlproject">
-        <file>QmlProjectManager.mimetypes.xml</file>
         <file>images/qmlfolder.png</file>
         <file>images/qmlproject.png</file>
     </qresource>

src/plugins/qmlprojectmanager/qmlprojectplugin.cpp

@@ -34,8 +34,6 @@
 
 #include <qtsupport/qtsupportconstants.h>
 
-#include <utils/mimetypes/mimedatabase.h>
-
 #include <QtPlugin>
 
 #include <QApplication>
@@ -54,7 +52,6 @@ QmlProjectPlugin::~QmlProjectPlugin()
 bool QmlProjectPlugin::initialize(const QStringList &, QString *errorMessage)
 {
     Q_UNUSED(errorMessage)
-    Utils::MimeDatabase::addMimeTypes(QLatin1String(":/qmlproject/QmlProjectManager.mimetypes.xml"));
 
     addAutoReleasedObject(new Internal::Manager);
     addAutoReleasedObject(new Internal::QmlProjectRunConfigurationFactory);